BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Drupal iCal API//EN BEGIN:VEVENT UID:19635 DTSTART;TZID=America/Chicago:20261204T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261204T125000 SUMMARY:EEPS Brown Bag: Elizabeth Cobb / Sarah Daly CLASS:PUBLIC DESCRIPTION:Second Year Research Updates\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19634 DTSTART;TZID=America/Chicago:20261113T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261113T125000 SUMMARY:EEPS Brown Bag: Niku Darafshi / Alex Meyer CLASS:PUBLIC DESCRIPTION:Second Year Research Updates\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19633 DTSTART;TZID=America/Chicago:20261106T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261106T125000 SUMMARY:EEPS Brown Bag: Zoe Schlossnagle / Annie Maloney CLASS:PUBLIC DESCRIPTION:Second Year Research Updates\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19631 DTSTART;TZID=America/Chicago:20261009T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261009T125000 SUMMARY:EEPS Brown Bag: Copland Yong CLASS:PUBLIC DESCRIPTION:Talk Title TBD\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19620 DTSTART;TZID=America/Chicago:20261120T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261120T125000 SUMMARY:EEPS Brown Bag: Kindle Hon CLASS:PUBLIC DESCRIPTION:AGU Practice Talk\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19619 DTSTART;TZID=America/Chicago:20261023T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261023T125000 SUMMARY:EEPS Brown Bag: Jaiden Zak CLASS:PUBLIC DESCRIPTION:FRICTIONAL IMPLICATIONS OF ICEQUAKES BENEATH THWAITES GLACIER\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19618 DTSTART;TZID=America/Chicago:20261016T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261016T125000 SUMMARY:EEPS Brown Bag: Casper Graham CLASS:PUBLIC DESCRIPTION:Talk Title TBD\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19617 DTSTART;TZID=America/Chicago:20261002T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261002T125000 SUMMARY:EEPS Brown Bag: Hugh Chou CLASS:PUBLIC DESCRIPTION:TV TRIVIA AND TECH TIPS\n\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19616 DTSTART;TZID=America/Chicago:20260918T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260918T125000 SUMMARY:EEPS Brown Bag: Aaron Kruskie CLASS:PUBLIC DESCRIPTION:Talk Title TBD\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19615 DTSTART;TZID=America/Chicago:20261105T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261105T123000 SUMMARY:EEPS Colloquium: Jonathan Ajo-Franklin CLASS:PUBLIC DESCRIPTION:Host: Doug Wiens\n\n_EEPS Colloquia are made possible by the Wi lliam C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19614 DTSTART;TZID=America/Chicago:20261029T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261029T123000 SUMMARY:EEPS Colloquium: Demian Saffer CLASS:PUBLIC DESCRIPTION:TOLMAN LECTURE\n\nHost: Phil Skemer\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19613 DTSTART;TZID=America/Chicago:20261022T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261022T123000 SUMMARY:EEPS Colloquium: Adam Forte CLASS:PUBLIC DESCRIPTION:Host: Claire Masteller\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19612 DTSTART;TZID=America/Chicago:20261015T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261015T123000 SUMMARY:EEPS Colloquium: Jennifer Middleton CLASS:PUBLIC DESCRIPTION:GLACIALLY-DRIVEN CHANGES IN SUBMARINE HYDROTHERMAL ACTIVITY\n\n  \n \n \n \nLand-based volcanic systems and geophysical modelling of m id-ocean\nridges suggest that submarine volcanic activity may be influence d by\nglacially driven changes in sea level. Is there evidence for\nglacia lly-paced variation in submarine hydrothermal circulation? In\nthis talk\, I will present a suite of hydrothermal iron flux records\nderived from mi d-ocean ridge sediment cores and explore their\nimplications for marine ir on cycling\, iron delivery to Southern Ocean\nsurface waters\, and possibl e driving mechanisms linking the climate\nsystem and the solid Earth on gl acial timescales. I will also\nelaborate on the utilization of constant fl ux proxies\, the geochemical\ntools that enable reconstruction of hydrothe rmal time series and other\npaleoceanographic flux records from sediments that have accumulated in\ncomplex bathymetric environments.\n\n \n\nHost: Rita Parai\n\n_EEPS Colloquia are made possible by the William C. Ferguso n Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19611 DTSTART;TZID=America/Chicago:20261008T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261008T123000 SUMMARY:EEPS Colloquium: David Sandwell CLASS:PUBLIC DESCRIPTION: \n\nMAPPING THE GLOBAL SEAFLOOR USING SATELLITES AND SHIPS: R ECENT\nIMPROVEMENTS FROM SWOT GRAVITY USING MACHINE LEARNING\n\nVariations in Earth’s gravity field create broad bumps and dips in\nthe ocean surf ace that mirror the mass distribution of seafloor\nfeatures such as ridges \, seamounts\, and trenches. This relationship\nenables scientists to infe r seafloor depth from satellite altimetry\,\nthough fundamental physics li mits the achievable resolution in the\ndeep ocean to about 3–5 km. Over several decades\, successive\naltimeter missions have progressively refine d global seafloor maps\,\nand the new SWOT mission now provides the most p recise marine gravity\nmeasurements to date. In this study\, five research groups applied\nmachine learning to merge SWOT gravity data with ship sou ndings\,\nproducing consistent global bathymetry maps that are 23–46% mo re\naccurate than traditional approaches. The greatest gains are in\nresol ving shallow seamounts and deep trenches\, improving our ability\nto study ocean circulation\, plate tectonics\, and geologic hazards\,\nwhile advan cing the goals of the international Seabed 2030 initiative\nto map the ent ire ocean floor by 2030.\n\nHost: Roger Michaelides\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19610 DTSTART;TZID=America/Chicago:20261001T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261001T123000 SUMMARY:EEPS Colloquium: Brad Foley CLASS:PUBLIC DESCRIPTION:THE COMPOSITIONAL DIVERSITY OF ROCKY EXOPLANETS: CONSEQUENCES F OR\nEVOLUTION\, TECTONICS\, AND HABITABILITY\n\nThousands of exoplanets ha ve been discovered over the last 30 years\ncovering a wide range of sizes\ , compositions\, interior structures\, and\nstellar radiation environments . Many of these planets are likely rocky\nbased on their bulk density. The variation in rock forming elements\nseen in stars show\, to first order\, that rocky exoplanets could span a\nwide range of mantle mineralogies\, f rom Earth-like olivine-pyroxene\nmixtures to nearly pure olivine or pure p yroxene mantles. Combinations\nof pyroxene and quartz or olivine and peric lase are also possible.\nSuch compositional variation could have profound consequences for the\ntectonics\, evolution\, and habitability of rocky ex oplanets. I will\ndiscuss how rocky planet compositional variations can in fluence their\nlong-term thermal evolution and ability to promote habitabl e surface\nenvironments through volcanism and weathering. I will further s how how\nplanet composition can influence whether planets operate in a\nst agnant-lid or plate-tectonic regime. Planets with sub-equal mixtures\nof t wo or more minerals can more readily generate the weak\nlithospheric shear zones required for plate tectonics by mineral phase\nmixing and grain siz e reduction. Finally\, I will discuss how models of\nexoplanet geological evolution are critical for interpreting\nastronomical observations.  \n\n Host: Phil Skemer\n\n_EEPS Colloquia are made possible by the William C. F erguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19609 DTSTART;TZID=America/Chicago:20260903T140000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260903T160000 SUMMARY:EEPS Department Open House CLASS:PUBLIC DESCRIPTION:Join us for the annual EEPS department open house. This year's open\nhouse will be held in conjunction with a special double colloquium o n\nThursday\, September 3\n[https://eeps.washu.edu/events/eeps-colloquium- robert-anderson] and\nFriday\, September 4\n[https://eeps.washu.edu/events /eeps-colloquium-suzanne-anderson].\n\nOpen house will take place from 2:0 0 PM - 4:00 PM  on September 3 and\nwill consist of lab tours\, poster pr esentations\, snacks\, and prizes.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19608 DTSTART;TZID=America/Chicago:20260819T090000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260819T100000 SUMMARY:EEPS Dissertation Defense: Jedidiah Dale CLASS:PUBLIC DESCRIPTION:The final examination of\n\nJedidiah Dale\nfor the degree of\nD octor of Philosophy in Earth\, Environmental\, and Planetary Sciences\nWas hington University in St. Louis\n\nWednesday 19 August at 9:00 AM in Rudol ph Hall Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19599 DTSTART;TZID=America/Chicago:20260821T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260821T213000 SUMMARY:X-ray Astronomy in Living Color: St. Louis Astronomical Society Aug ust\n2026 Meeting CLASS:PUBLIC DESCRIPTION:Observational astronomy is mostly a story about measuring photo ns with\nprecision — how many are there\, what direction are they coming from\,\nwhen do they arrive\, and what are their energies?  The better w e can\nmake those measurements the better our understanding of the\nastrop hysical systems that send those photons across the Cosmos to our\nsky.  A key tool in astrophysical studies is spectroscopy —\ndeciphering photon energies by exploring the rainbow of colors in the\nlight that we detect.  Most of us are familiar with rainbows created\neither naturally in a mi sty sky or intentionally with prisms and\ndiffraction gratings.  But how do we do this when we are talking\nabout X-rays?  It turns out\, this is much more difficult\, but\nextremely important for our understanding of th e most exotic phenomena\nin our Universe\, such as black holes and neutron stars!  In this talk\nI will discuss our currently most precise instrume nts for measuring\n“X-ray Rainbows”: the Chandra-High Energy Transmiss ion Gratings\nand the XRISM satellite\, which uses “quantum detectors” to open up\na new frontier in X-ray spectroscopy. I will also discuss pos sible\nfuture instruments that could be used to make precise measurements of\n\"X-ray rainbows\" from distant\, supermassive black holes to reveal t he\n“missing matter” in the Universe (that you probably didn’t even\ nrealize was missing!)\n\n_ Michael Nowak is a Research Professor in the Physics Department as\nwell as the Associate Director of the McDonnell Cen ter for the Space\nSciences at Washington University in St. Louis. Nowak ’s work\nencompasses both observation and theory of astrophysical compac t\nobject (black hole and neutron star) systems. His early theoretical\nwo rk focused on the hydrodynamics of accretion flows in these systems\,\nand later evolved into theories describing the implications of X-ray\nspectra and variability for models of astrophysical jets\nrelativistically speedi ng away from and hot (billions of degrees)\ncoronae surrounding compact ob ject systems. He performs observational\nstudies with a variety of High En ergy Astrophysics observatories\,\nincluding the Chandra\, Swift\, NICER\, and NuSTAR (NASA)\, and XMM-Newton\n(ESA) satellites.  He currently is a science collaborator\, assisting\nwith coordinated X-ray and gamma-ray ob servations\, with the Event\nHorizon Telescope team who have used radio in terferometry to image\naccretion flows around the supermassive black holes Sgr A* and M87*._\n\n_The St. Louis Astronomical Society is an organizati on for individuals\ninterested in astronomy and telescopes. The public is invited to\nattend its meetings\, telescope observing sessions\, and speci al events.\nFor more information about Astronomical Society events\, pleas e visit\n__www.slasonline.org_ [http://www.slasonline.org]_._\n\n_Free par king will be available._\n\n_Header image: Halley's comet (Credit: NASA Je t Propulsion Laboratory\,\nCalifornia Institute of Technology)_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19600 DTSTART;TZID=America/Chicago:20260717T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260717T213000 SUMMARY:Planetary Thermal Emission in the Age of Roman: St. Louis Astronomi cal\nSociety July Meeting CLASS:PUBLIC DESCRIPTION:Measuring the dayside thermal emission of rocky exoplanets prov ides\nessential insights into their compositions and the presence of\natmo spheres. Recent James Webb Space Telescope observations have\nidentified a puzzling pattern. Some rocky exoplanets orbiting small\ncool red stars ha ve dayside temperatures higher than the theoretical\nmaximum\, assuming th at the star is the sole energy source. This\nimplies the presence of addit ional internal heat sources. In a recent\nresearch paper\, Dr. Lin simulat ed three possible internal heating\nmechanisms - residual heating from the planet’s formation\, tidal\nheating\, and induction heating from intera ctions with the stellar\nmagnetic field. He found that these mechanisms\, even in combination\,\ncannot explain the observed thermal emission excess es. The observed\nexcess heat is more likely caused by other processes not considered in\nhis study. NASA’s Nancy Grace Roman Space Telescope\, to be launched\nin September 2026\, will provide additional data to refine t he\nsimulations. Dr. Lin will also discuss the prospect of using the Roman \ntelescope to detect transiting and non-transiting exoplanets orbiting\nw hite dwarf stars.\n\n Dr. Zifan Lin is a postdoctoral researcher in the P hysics Department\nand the McDonnell Center for the Space Sciences at Wash ington\nUniversity. He has broad research interests in planetary science. He\nstudies planetary interiors\, exoplanet atmospheres\, photochemistry\, \nbiosignatures\, and transmission spectroscopy.\n\n_The St. Louis Astrono mical Society is an organization for individuals\ninterested in astronomy and telescopes. The public is invited to\nattend its meetings\, telescope observing sessions\, and special events.\nFor more information about Astro nomical Society events\, please visit\n__www.slasonline.org_ [http://www.s lasonline.org]_._\n\n_Free parking will be available._\n\n_Header image: H alley's comet (Credit: NASA Jet Propulsion Laboratory\,\nCalifornia Instit ute of Technology)_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19601 DTSTART;TZID=America/Chicago:20260918T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260918T213000 SUMMARY:Astronomy as Seen Through the Eyes of Indian and Hindu Astronomers: \nSt. Louis Astronomical Society September 2026 Meeting CLASS:PUBLIC DESCRIPTION: \n\n_The St. Louis Astronomical Society is an organization fo r individuals\ninterested in astronomy and telescopes. The public is invit ed to\nattend its meetings\, telescope observing sessions\, and special ev ents.\nFor more information about Astronomical Society events\, please vis it\n__www.slasonline.org_ [http://www.slasonline.org]_._\n\n_Free parking will be available._\n\n_Header image: Mishra Yantra\, located within the J antar Mantar\nastronomical observatory in New Delhi. It was built in the e arly 18th\ncentury (starting around 1724) by Maharaja Jai Singh II of Jaip ur to\nhelp revise calendar and astronomical tables. The structure is\ndes igned to measure the shortest and longest days of the year and the\nnoon t ime in various cities around the world\, utilizing 13 different\narchitect ural instruments. (Wikimedia Commons)_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19598 DTSTART;TZID=America/Chicago:20261119T190000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261119T200000 SUMMARY:2026 Robert M. Walker Distinguished Lectures Public Lecture CLASS:PUBLIC DESCRIPTION:Thorsten Kleine is Director and Scientific Member of the Max Pl anck\nInstitute for Solar System Research\, where he leads research into t he\norigin and evolution of the Solar System. A cosmochemist and meteorite \nresearcher\, his work uses high-precision isotope analyses of\nmeteorite s and planetary materials to investigate how planets\,\nasteroids\, and mo ons formed more than 4.5 billion years ago.\nPreviously a professor at the University of Münster and researcher at\nETH Zürich\, Kleine is interna tionally recognized for groundbreaking\ncontributions to planetary science and the study of early Solar System\nhistory. He is the recipient of nume rous honors\, including the F. W.\nClarke Medal\, the Nier Prize\, and the Victor Moritz Goldschmidt Award.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19597 DTSTART;TZID=America/Chicago:20261118T160000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261118T170000 SUMMARY:2026 Robert M. Walker Distinguished Lectures Colloquium CLASS:PUBLIC DESCRIPTION:Thorsten Kleine is Director and Scientific Member of the Max Pl anck\nInstitute for Solar System Research\, where he leads research into t he\norigin and evolution of the Solar System. A cosmochemist and meteorite \nresearcher\, his work uses high-precision isotope analyses of\nmeteorite s and planetary materials to investigate how planets\,\nasteroids\, and mo ons formed more than 4.5 billion years ago.\nPreviously a professor at the University of Münster and researcher at\nETH Zürich\, Kleine is interna tionally recognized for groundbreaking\ncontributions to planetary science and the study of early Solar System\nhistory. He is the recipient of nume rous honors\, including the F. W.\nClarke Medal\, the Nier Prize\, and the Victor Moritz Goldschmidt Award.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19596 DTSTART;TZID=America/Chicago:20260924T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260924T123000 SUMMARY:EEPS Colloquium: Bidong Zhang CLASS:PUBLIC DESCRIPTION:Host: Kun Wang\n\n_EEPS Colloquia are made possible by the Will iam C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19593 DTSTART;TZID=America/Chicago:20260917T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260917T123000 SUMMARY:EEPS Colloquium: Meghana Ranganathan CLASS:PUBLIC DESCRIPTION: \n\nTHE ROLE OF RHEOLOGY IN GOVERNING ICE SHEET DYNAMICS \n\ n \n \nABSTRACT:\nMass loss from the Antarctic Ice Sheet largely occurs due to the\nviscous ice flow of glaciers from the interior of ice sheets t owards\nthe ocean. The rate of flow to the ocean is governed by ice viscos ity\,\nwhich in turn depends on microphysical and macrophysical processes. \nWhile increasing amounts of evidence suggest that ice viscosity varies\n significantly in space and time in the Antarctic Ice Sheet\, current\nice sheet models treat ice viscosity as a fixed\, empirically-derived\nvalue. In this talk\, I first explore the implications of neglecting\nthis comple xity in ice viscosity. I demonstrate using simple\,\ntheoretical models th at ice rheology may play a significant role in\ngoverning transient ice sh eet dynamics and may alter the stability\nportrait of marine ice sheets. I further show that in the current\nconfiguration of the Antarctic Ice Shee t\, rheology likely plays a\nsubstantial role in governing the force balan ce\, thereby setting the\nflow speed. I then present a bulk parameterizati on method for\nincorporating ice crystal-scale processes into a model for ice\nviscosity and demonstrate that this provides a way of parameterizing\ nthe effect of varying flow conditions on future ice sheet behavior.\nFina lly\, I then show first steps towards a formal multi-scale ice\nviscosity model implemented using a neural emulator of an ice\nmicrophysics model\, which provides a path forward for formally\nrepresenting crystal-scale var iability in ice viscosity in large-scale\nice sheet models.\n\nHost: Douga l Hansen\n\n_EEPS Colloquia are made possible by the William C. Ferguson F und_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19592 DTSTART;TZID=America/Chicago:20261203T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20261203T123000 SUMMARY:EEPS Colloquium: Ray Arvidson CLASS:PUBLIC DESCRIPTION:EARTH'S MOON AND ARTEMIS\n\nRay Arvidson\, professor emeritus i n the Department of Earth\,\nEnvironmental\, and Planetary Sciences\, will deliver a colloquium which\ngoes over the origin and evolution of the Moo n\, the Apollo Program\,\nand emerging plans associated with the Artemis P rogram.\n\nHost: Phil Skemer\n\n_EEPS Colloquia are made possible by the W illiam C. Ferguson Fund_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19591 DTSTART;TZID=America/Chicago:20260910T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260910T123000 SUMMARY:EEPS Colloquium: Yuanzhi Tang CLASS:PUBLIC DESCRIPTION:FROM MINERAL INTERFACES TO RESOURCE ECOSYSTEMS: OPPORTUNITIES A ND\nCHALLENGES FOR ALTERNATIVE CRITICAL MINERAL RESOURCES\n\nABSTRACT:\nGr owing demand for critical minerals is driving interest in resource\nstream s that extend beyond conventional high-grade ores\, including\nmine and in dustrial wastes\, low-grade geological materials\, secondary\nresources\, and biologically accumulated metals. These alternative\nresources could di versify domestic supply while reducing waste and\nenvironmental impacts\, but they also present a fundamental scientific\nchallenge: valuable elemen ts often occur at low concentrations\, in\nheterogeneous matrices\, and in chemical forms that are poorly\nunderstood and difficult to selectively r ecover.\nThis talk will examine how molecular- and mineral-scale understan ding\nof element speciation\, mineral-water interfacial reactions\, and\nc oupled dissolution\, transformation\, and separation processes can\ninform the development of critical mineral resources. Drawing from\nrecent work on unconventional resources from our group\, I will\nhighlight how advance d spectroscopy and microscopy\, geochemical\nexperiments\, and process-ori ented studies can connect fundamental\nunderstanding of where critical ele ments reside and how they are bound\nwith strategies for selective mobiliz ation\, separation\, and recovery\nfrom complex\, low-grade materials.\nTh e discussion will then broaden from individual extraction processes\nto th e resource ecosystems in which they operate. Realizing the\npotential of a lternative resources requires integrating geochemistry\nand separation sci ence with resource characterization\, data and\npredictive tools\, process ing infrastructure\, environmental\nperformance\, regional supply chains\, and workforce development. This\nsystems-to-ecosystems perspective provid es a framework for identifying\nwhere fundamental interfacial science can have the greatest impact on\ntranslating unconventional resources into sec ure\, sustainable\, and\neconomically viable mineral supply chains.\n\nBIO :\nDr. Yuanzhi Tang is the Georgia Power Professor in the School of Earth\ nand Atmospheric Sciences and the School of Civil and Environmental\nEngin eering\, and the Executive Director of the Strategic Energy\nInstitute and at Georgia Tech. She leads interdisciplinary efforts\nspanning elemental cycle\, critical mineral resources\, and advanced\nmaterials\, with a focu s on connecting fundamental research to\nreal-world impact. She is also th e founding director of the Center for\nCritical Mineral Solutions and has helped build regional and\ninternational partnerships around sustainable c ritical mineral supply\nchains.\nDr. Tang’s research focuses on molecula r scale processes at\nmineral-water interfaces and their applications in r esource recovery\,\nnutrient cycling\, energy materials\, and circular res ource systems. Her\nwork integrates advanced spectroscopy\, microscopy\, a nd geochemical\napproaches to understand and control element behavior acro ss natural\nand engineered systems.\nShe received her Ph.D. in geochemistr y from Stony Brook University and\njoined Georgia Tech in 2013 following p ostdoctoral research at Harvard\nUniversity. She is a Fellow of the Americ an Chemical Society and\ncurrently serves as Co-Editor-in-Chief of _Chemic al Geology_.\n\nHost: Jeff Catalano\n\n_EEPS Colloquia are made possible b y the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19589 DTSTART;TZID=America/Chicago:20260903T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260903T123000 SUMMARY:EEPS Colloquium: Robert Anderson CLASS:PUBLIC DESCRIPTION: \n\nOur department welcomes Professor Robert Anderson and Pro fessor\nSuzanne Anderson from the University of Colorado - Boulder for two \ncolloquia to be delivered Thursday September 3 at 11:30 and Friday\nSept ember 4 at 12:00.\n\nTHE LIFE CYCLE OF ROCK GLACIERS\n\nRock glaciers are moving bodies of ice that are sufficiently covered\nin rocky debris to pre vent any significant melt of their ice-rich\ncores. They are plentiful ben eath tall headwalls in our mountains in\nthe West\, and constitute the lar gest manifestation of the modern\ncryosphere. Compared to their bright tru e glacier cousins\, they are\nthin\, stubby\, slow and gnarly. Yet they cr y out to be understood as we\nclimb\, mine\, and photograph among them. I will describe research on\nthree rock glaciers in Colorado’s mountains. We have constrained\nmodern speeds using feature tracking\, GNSS and RTK-G PS\, and long-term\nspeeds using 10Be in surface rocks. They are moving at speeds of\ntypically 0.5 m/yr but up to 2 m/year in steep places. The lan dscape\nappears to have converted from true glacier to rock glacier domina tion\nafter the Younger Dryas ~ 11 ka. The rock glaciers have been active\ nover the Holocene and continue to advance down their valleys. Their\nheal th is governed by significant rockfall and snow avalanching to\nfeed the “rooting zone” beneath the tall rock walls at the heads\nof the valley s. Numerical models that honor the birth of rock glaciers\nwith sufficient caps of debris in the rooting zone\, and subsequent\nmotion of the ice by internal deformation can reproduce both modern\nand long-term displacemen t fields only when accommodating significant\nvariation in the supply of a valanched snow over the Holocene.\n\nHost: Roger Michaelides\n\n_EEPS Coll oquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19590 DTSTART;TZID=America/Chicago:20260904T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260904T130000 SUMMARY:EEPS Colloquium: Suzanne Anderson CLASS:PUBLIC DESCRIPTION: \n\nCAN ROCK GLACIERS REPLACE GLACIER WATER RESOURCES? \n\nR ock glaciers are often cited as a water resource in alpine\nwatersheds\, y et their hydrologic behavior is understudied. These\ndebris-mantled ice to ngues number in the thousands across the western\nUS\, while numbers of tr ue ice glaciers are declining. Can rock\nglaciers replace the water resour ces of glaciers?  Specifically\, does\nmelt of the ice core of the rock g enerate significant streamflow\, and\nhow do rock glaciers affect water fl ow paths and groundwater recharge?\nWe examine these questions in Imogene Basin\, San Juan Mountains\,\nColorado. We have been sampling the outlet o f a rock glacier\,\ngroundwater emerging from a mine adit\, and nearby alp ine surface\nstreams. We combine stream gaging with measurements of water stable\nisotopes\, specific conductivity\, water temperature\, and 14C age s of\ndissolved inorganic carbon to partition water sources over time.\nMu ltiple lines of evidence show that rock glacier ice does not\ncontribute t o runoff in the present climate. I will walk through\nhydrograph separatio n\, streamflow temperatures\, and water mass balance\narguments to support this conclusion. The rock glacier does divert\ninfiltrating snowmelt and rainwater through its rocky carapace to its\nmargin\, and so is efficient at generating runoff. At the same time\, it\nis probably a barrier to grou ndwater recharge over its area.\nNonetheless\, radiocarbon water ages impl y that base flow from the rock\nglacier and from all streams we sampled is dominated by groundwater\nwith hundreds to thousands of years residence t ime in this alpine\nbasin. Although the rock glacier stores ice\, at prese nt it acts as a\npermeability barrier that steers infiltrating snowmelt an d rain\nthrough its rocky cover rather than as a water source.\n\nHosts: C laire Masteller \n\n_EEPS Colloquia are made possible by the William C. F erguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19588 DTSTART;TZID=America/Chicago:20260827T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260827T123000 SUMMARY:EEPS Colloquium: Claire Masteller CLASS:PUBLIC DESCRIPTION:GEOMORPHIC CONTROLS ON LANDSCAPE CHANGE AND EROSION HAZARDS FRO M\nRIVERS TO COASTS\n\nHost: Phil Skemer\n\n_EEPS Colloquia are made possi ble by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19580 DTSTART;TZID=America/Chicago:20260619T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260619T213000 SUMMARY:Halley's Spectacular 2061 Prospects: St. Louis Astronomical Society \nJune Meeting CLASS:PUBLIC DESCRIPTION:Dr. Joseph N. Marcus will recount his tumultuous experience wit h\nHalley’s Comet while editing Comet News Service for the McDonnell\nPl anetarium between 1975 and 1986. To forecast its brightness in\n1985-86\, analysts had to draw on the visual magnitude reports from the\n1909-10 app arition. Dr. Marcus will explain comet brightness behavior\,\nhow brightne ss is estimated visually\, and why expert predictions were\nso inaccurate in 1986. He will also review Halley’s Jekyll-Hyde\npersonality through h istory. Why was it “big or bright” as the\nfull Moon in 1066\, and vis ible in daylight in 1222 and just off the\nlimb of the Sun in 1910\, but s o unimpressive in 1985-86? The\nexplanation involves the bizarre way micro scopic comet dust scatters\nsunlight preferentially in a forward direction . Failure again to\naccount for this special physics in conventional forec asts will\nunderestimate the comet’s peak brightness by 8-fold in the su mmer of\n2061. Dr. Marcus predicts that Halley’s brightness-enhanced hea d\nwill rival Jupiter in brilliance\, and with its similarly-enhanced dust \ntail added in\, the comet might even briefly cast shadows.\n \nMarcus i s a retired pathologist\, SLAS member\, former editor of Comet\nNews Servi ce\, and comet researcher and writer. He serves on the\nAdvisory Board of Lowell Observatory.\n \n_The St. Louis Astronomical Society is an organiz ation for individuals\ninterested in astronomy and telescopes. The public is invited to\nattend its meetings\, telescope observing sessions\, and sp ecial events.\nFor more information about Astronomical Society events\, pl ease visit\n__www.slasonline.org_ [http://www.slasonline.org]_._\n\n_Free parking will be available._\n\n_Header image: Halley's comet (Credit: NASA Jet Propulsion Laboratory\,\nCalifornia Institute of Technology)_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19576 DTSTART;TZID=America/Chicago:20260501T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260501T130000 SUMMARY:Brown Bag: Maggie Hinkston CLASS:PUBLIC DESCRIPTION:WHO MADE THIS LIPID? APPLICATION OF TAXONOMIC DISTINCTNESS INDI CES TO\nLIPID BIOMARKERS\n\nPractice talk for the Astrobiology Science Con ference (AbSciCon) 2026\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19575 DTSTART;TZID=America/Chicago:20260428T100000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260428T130000 SUMMARY:2026 TRIADS Spring Symposium CLASS:PUBLIC DESCRIPTION:THE SESSION OPENS WITH_ GUEST SPEAKER __ALEX BRADLEY_\n[https:/ /eeps.washu.edu/people/alexander-s-bradley]\, _ASSOCIATE\nPROFESSOR OF EAR TH\, ENVIRONMENTAL\, AND PLANETARY SCIENCES\,_ SHARING\nHIS INSIGHTS INTO HOW AI IS ACCELERATING SCIENTIFIC DISCOVERY AND\nHELPING TO TRANSLATE SPEC IALIZED RESEARCH TO REACH A WIDER AUDIENCE\;\nFOLLOWED BY TRIADS SEED TEAM S SHARING THEIR PROJECTS. \n\nThe following TRIADS Seed Teams\n[https://t riads.washu.edu/news/triads-announces-new-round-seed-grants]\nwill present their work:\n\n* LINYING ZHANG\, Project: “Integrating Geographic Infor mation\nSystems and Electronic Health Records for Scalable Real-World Evid ence\nGeneration:  A Case Study on Opioid Use Disorder”\n* HANNAH SZLYK \, Project: “Characterizing Patterns of Behavior Among\nAdolescent Canna bis Users with Co-occurring Depression Symptoms”\n* LINDSAY UNDERHILL\ , Project: “Investigating Geographic Disparities\nin Social and Environm ental Determinants of Hypertension the Greater\nSt. Louis Area”\n* ZICHE N WANG\, Project: “Machine Learning Using Cardiotocography\nand Other In trapartum Data to Predict Birth Outcomes” \n* AYSU ECE SARICAOĞLU\, Pr oject: “Confronting the Next Decade of\nData-Intensive Astronomy Ushered by LSST”\n* CHIEN-JU HO\, Project: “Understanding the Facets of Stake holder\nTrust in AI Tools for Housing”\n* WOUTER KOOL\, Project: “Acc ounting for human bias to improve\nAI-assisted decision making”\n* ANA B ABUS\, Project: “Measuring Financial Innovation via Natural\nLanguage Pr ocessing”\n* JASON JABBARI\, Project: Neighborhood Change\, Student Mob ility\, and\nSchool Belonging: Novel Insights Using Advanced Methods and\n Algorithmic Data Linkages\n\nTo learn more about all our 2023 Seed Grant R ecipients\n[https://triads.washu.edu/news/triads-announces-recipients-seed -grant-funding-0]\nor 2024 Seed Grant Recipients\n[https://triads.washu.ed u/news/triads-announces-new-round-seed-grants]\nand their project summarie s. \n\nRSVP\n[https://triads.washu.edu/form/rsvp-s26-symposium?source_ent ity_type=node&source_entity_id=14049]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19572 DTSTART;TZID=America/Chicago:20260515T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260515T213000 SUMMARY:Planets with Two Suns: St. Louis Astronomical Society May Meeting CLASS:PUBLIC DESCRIPTION:Binary stars\, which are two suns orbiting each other\, offer a unique\nwindow into how planets form and survive in complex environments. In\nthis talk\, Dr. Esmer will explore how astronomers study these system s\nand search for their planets using a powerful technique called eclipse\ ntiming variations (ETVs). By carefully measuring tiny shifts in the\ntimi ng of stellar eclipses\, even with modest telescopes\, astronomers\ncan un cover hidden planets and learn about stellar interactions\,\nevolution\, a nd magnetic activity. Because ETV studies rely on\nlong-term monitoring\, they provide an exciting opportunity for\ncontributions from both professi onal and amateur observers.\n\nDr. Ekrem M. Esmer is a McDonnell Center Po stdoctoral Fellow in the\nDepartment of Physics at Washington University i n St. Louis\, where he\nstudies planets orbiting binary star systems. He e arned his PhD in\nAstrophysics from Ankara University in Turkey\, focusing on the orbital\ndynamics and stability of planets in multiple-star enviro nments. His\ncurrent research combines space telescope data and advanced a nalysis\ntechniques to search for and characterize circumbinary planets. O ne\ngoal is to understand how abundant such worlds are in our galaxy.\n\n_ The St. Louis Astronomical Society is an organization for individuals\nint erested in astronomy and telescopes. The public is invited to\nattend its meetings\, telescope observing sessions\, and special events.\nFor more in formation about Astronomical Society events\, please visit\n__www.slasonli ne.org_ [http://www.slasonline.org]_._\n\n_Free parking will be available. _\n\n_Header image: An artist's illustration shows that the stars in the\n TOI 1338 system make an eclipsing binary — they circle each other in\nou r plane of view. If you could hover near the planet TOI 1338 b\, you\nwoul d see an eclipse every 15 days. Credit: NASA's Goddard Space\nFlight Cente r/Chris Smith (USRA)_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19571 DTSTART;TZID=America/Chicago:20260417T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260417T213000 SUMMARY:Weird Stars: St. Louis Astronomical Society April Meeting CLASS:PUBLIC DESCRIPTION:Stars come in a variety of sizes\, colors\, and physical proper ties\, but\nmost fit into a theory of stellar structure and evolution. The re are\nsome very rare exceptions to the standard star types - these are t he\n“weird stars”.  This program begins with a look at the regular\nt ypes of stars and their life cycles\, and then presents several\nexamples of weird stars – those that do not fit the standard models.\n\nRich Heue rmann retired as the Administrative Officer of the Department\nof Earth an d Planetary Sciences and the Outreach Program Coordinator\nfor the NASA Mi ssouri Space Grant Consortium at Washington University\nin Saint Louis\, M issouri.  He is a member of the Saint Louis\nAstronomical Society and a N ASA Solar System Ambassador.  The\nAmbassadors form a nationwide network of individuals who communicate\nto school groups\, civic groups\, and the general public information\nabout astronomy and planetary sciences in gene ral and NASA missions in\nparticular.  Prior to his thirty-year term at W ashington University\,\nhe served as the assistant director of the McDonne ll Planetarium in\nSt. Louis.  \n\n_The St. Louis Astronomical Society is an organization for individuals\ninterested in astronomy and telescopes. The public is invited to\nattend its meetings\, telescope observing sessio ns\, and special events.\nFor more information about Astronomical Society events\, please visit\n__www.slasonline.org_ [http://www.slasonline.org]_. _\n\n_Free parking will be available._\n\n_Header image: The yellowish sta r near center is T Tauri\, prototype of\nthe class of T Tauri variable sta rs. Just next door is the yellow\ncosmic cloud historically known as Hind' s Variable Nebula (NGC 1555).\nOver 400 light-years away\, at the edge of an otherwise invisible\nmolecular cloud\, both star and nebula are seen to vary significantly\nin brightness but not necessarily at the same time\, adding to the\nmystery of the intriguing region._\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19570 DTSTART;TZID=America/Chicago:20260708T090000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260708T100000 SUMMARY:EEPS Dissertation Defense: Kelsey Woody CLASS:PUBLIC DESCRIPTION:The final examination of\n\nKelsey Woody\nfor the degree of\nDo ctor of Philosophy in Earth\, Environmental\, and Planetary Sciences\nWash ington University in St. Louis\n\nWednesday July 8 at 9:00 AM in Rudolph H all Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19569 DTSTART;TZID=America/Chicago:20260413T150000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260413T160000 SUMMARY:Historical insights and new perspectives on Xe nucleosynthesis: fro m\nthe molecular cloud to the Earth's atmosphere CLASS:PUBLIC DESCRIPTION:Please join us in welcoming Dr. Guillaume Avice\, hosted by EEP S\nAssociate Professor Rita Parai. There will be a small reception with\ns nacks after this lecture at 4 PM in Rudolph Hall 302. \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19470 DTSTART;TZID=America/Chicago:20260417T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260417T125000 SUMMARY:EEPS Brown Bag: Hydrology Presentations CLASS:PUBLIC DESCRIPTION:This brown bag session will consist of final presentations from the\nHydrology class\, presentations are as follows:\n\nAlex Meyer - Pred ictions of Discharge in Volcanic Terrains using Long\nShort-Term Memory\n\ n \n\nNiku Darafshi - Learning Hydrologic Memory: Predicting Soil Moistur e\nAcross Time and Space\n\n \n\nSarah Daly - Predicting Hydrological Ext remes: A Random Forest\nApproach Using Climate\, Vegetation\, and Hydrolog ic Data\n\n \n\nZoe Schlossnagle - Controls on Streamflow in the Juneau I cefield: HGBR\nMethod\n\n \n\nKindle Hon - Can Machine Learning Improve S tage-Discharge Rating Curve\nShift Prediction?\n\n \n\n \n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19468 DTSTART;TZID=America/Chicago:20260722T100000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260722T110000 SUMMARY:EEPS Dissertation Defense: Robert Kostynick CLASS:PUBLIC DESCRIPTION:The final examination of\n\nRobert Kostynick\nfor the degree of \nDoctor of Philosophy in Earth\, Environmental\, and Planetary Sciences\n Washington University in St. Louis\n\nWednesday 22 July at 10:00 AM in Rud olph Hall Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19466 DTSTART;TZID=America/Chicago:20260319T160000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260319T180000 SUMMARY:The Serengeti Rules: The Regulation and Restoration of Biodiversity CLASS:PUBLIC DESCRIPTION:EVENT OVERVIEW\n\nBiologist\, author\, and film producer Sean B . Carroll will discuss the\ndiscovery of \"The Serengeti Rules\,\" the eco logical rules that regulate\nthe numbers and kinds of animals and plants i n any given place\, and\nhow they are being applied to restore some of the greatest\nwildernesses on the planet.\n\nAGENDA\n\n* 4:00 PM - Lecture an d Q&A*\n* 5:00 PM - Reception\n\n*For those unable to attend the lecture i n-person\, a virtual\nattendance option will be made available. To gain ac cess to the live\nstream\, please fill out the RSVP form.\n\nRegistration Required: RSVP\n[https://washu.qualtrics.com/jfe/form/SV_abKtvqL6Ydle1Cu]\ n\nABOUT SEAN CARROLL\n\nSean B. Carroll\, AB ’79\, is an internationall y recognized biologist\,\naward-winning author\, Emmy-and Peabody-winning film producer\, and\neducation leader.\n\nSean’s pioneering scientific r esearch has centered on the genes that\ncontrol animal body patterns. He i s a member of the National Academy\nof Sciences and a Fellow of the Americ an Academy of Arts and Sciences.\n\nSean is the author of six books for ge neral audiences including\nRemarkable Creatures\, a finalist for the Natio nal Book Award for\nnon-fiction. He led the Howard Hughes Medical Institut e’s Department\nof Science Education from 2010-2023 and was the founder of Tangled\nBank Studios\, where he served as executive producer of over 5 0 feature\nor educational films\, including the Emmy-winning The Serengeti Rules\nbased on Sean’s book of the same title.  \n\nSean is currently Distinguished University Professor and Balo-Simon\nChair of Biology at the University of Maryland\, an investigator of the\nHHMI\, and a professor e meritus at the University of\nWisconsin–Madison.\n\n_This lecture was ma de possible by the William C. Ferguson Fund._\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19465 DTSTART;TZID=America/Chicago:20260319T110000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260319T120000 SUMMARY:Ecology and Evolutionary Biology Seminar: Assistant Professor Laure n\nGillespie CLASS:PUBLIC DESCRIPTION:OPPORTUNITIES AND CHALLENGES FOR MONITORING BIODIVERSITY IN THE \nANTHROPOCENE WITH FOUNDATION MODELS\n\nInformation about Dr. Gillespie a nd her lab can be found at the\nfollowing link: https://gillespl.com/#Lab \n[https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgille spl.com%2F%23Lab&data=05%7C02%7Cvishion%40wustl.edu%7C1fed75aa7de9436670c8 08de7bd2b574%7C4ccca3b571cd4e6d974b4d9beb96c6d6%7C0%7C0%7C6390843421351383 32%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlA iOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=onZ31jQaK rgfmjLwwQuwsyiRVUjz1HenJdQkfUN9GMo%3D&reserved=0]\n\nThe Biology departmen t\n[https://biology.washu.edu/events/opportunities-and-challenges-monitori ng-biodiversity-anthropocene-foundation-models]\nhas shared a link to sign up for a one-on-one meeting as well as a\ncoffee hour prior to the talk. Additionally\, they ask for those who\nwill be attending the reception aft er the talk to RSVP using the sheet\nso they can get a headcount for how m uch to order for lunch.\n\nSign Up for a meeting or coffee hour here\n[htt ps://docs.google.com/spreadsheets/d/1AvoN-K1P5Zq-VIVE78Uk6uVmkgC9Z31MH16GG Aa92aQ/edit?gid=0#gid=0]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19460 DTSTART;TZID=America/Chicago:20260410T130000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260410T160000 SUMMARY:Glassberg/Greensfelder Forum CLASS:PUBLIC DESCRIPTION:Join us for an afternoon of environmental talks from EEPS junio r\nfaculty and their collaborators:\n\nAssistant Professor Dougal Hansen - Talk Title:_ _\"Constraining\nSubglacial Effective Stress from Normal-Inc idence Active-Source\nSeismics\, with Application to Thwaites Glacier\"\, Antarctica_\,_ will\nhost Atsuhiro Muto\, Associate Professor of Earth & E nvironmental\nScience from Temple University - Talk Title: \"Geophysical\n Investigations of Subglacial Controls on Thwaites Glacier Dynamics\".\n\nA ssistant Professor Roger Michaelides - Talk Title: \"Remote sensing\nand g eophysical characterization of subsurface ground ice in\nperiglacial syste ms\"_\,_ will host Jessica Fayne\, Assistant Professor\,\nEarth and Enviro nmental Sciences from the University of Michigan -\nTalk Title: \"Towards New Observations of Vegetation Water Storage and\nWind-Driven Lake Roughne ss Characteristics\".\n\nAssistant Professor Claire Masteller - Talk Title : \"What controls\nflood resilience and recovery in steep mountain streams ? Exploring the\ninterplay of sediment mobility\, flow history\, and chann el form\"_\,_\nwill host Gordon Grant\, Research Hydrologist for the USDA Forest\nService from Oregon State University - Talk Title: \"Reconsidering \ncritical flow: An organizing principle for fluid flow in steep\nchannels \".\n\nThere will be coffee\, tea\, and light snacks available during this \nafternoon event. A small reception with appetizers and beverages will\nb e held at 4 PM in Rudolph 301.\n\n_This forum was made possible with the g enerous support of the\nGlassberg and Greensfelder families._\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19459 DTSTART;TZID=America/Chicago:20260403T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260403T125000 SUMMARY:EEPS Brown Bag: Jonghan Moon CLASS:PUBLIC DESCRIPTION:SULFUR ISOTOPE GEOCHEMISTRY OF THE CHUKCHI SHELF SEDIMENTS IN T HE\nWESTERN ARCTIC OCEAN SINCE THE LAST DEGLACIATION\n\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19458 DTSTART;TZID=America/Chicago:20260327T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260327T130000 SUMMARY:EEPS Brown Bag: Julia Alvarez Lozano - PhD candidate from Universid ad\nComplutense Madrid CLASS:PUBLIC DESCRIPTION:STRETCHING TESSERAE ON VENUS\n\nHost: Paul Byrne\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19456 DTSTART;TZID=America/Chicago:20260507T130000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260507T140000 SUMMARY:EEPS Dissertation Defense: Henry Dawson CLASS:PUBLIC DESCRIPTION:The final examination of\n\nHenry Dawson\nfor the degree of\nDo ctor of Philosophy in Earth\, Environmental\, and Planetary Sciences\nWash ington University in St. Louis\n\nThursday May 7 at 1:00 PM in Rudolph Hal l Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19455 DTSTART;TZID=America/Chicago:20260415T090000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260415T100000 SUMMARY:EEPS Dissertation Defense: Samuel Patzkowsky CLASS:PUBLIC DESCRIPTION:The final examination of\n\nSamuel Patzkowsky\nfor the degree o f\nDoctor of Philosophy in Earth\, Environmental\, and Planetary Sciences\ nWashington University in St. Louis\n\nWednesday April 15 at 9:00 AM in Ru dolph Hall Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19454 DTSTART;TZID=America/Chicago:20260410T090000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260410T100000 SUMMARY:EEPS Dissertation Defense: Katherine Billings CLASS:PUBLIC DESCRIPTION:The final examination of\n\nKatherine Billings\nfor the degree of\nDoctor of Philosophy in Earth\, Environmental\, and Planetary Sciences \nWashington University in St. Louis\n\nFriday April 10 at 9:00 AM in Rudo lph Hall Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19453 DTSTART;TZID=America/Chicago:20260514T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260514T133000 SUMMARY:EEPS Class of 2026 Graduation Reception CLASS:PUBLIC DESCRIPTION:Expect a light lunch/appetizers followed by cake and a champagn e\ntoast. EEPS majors will receive an engraved gift from the Department.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19449 DTSTART;TZID=America/Chicago:20260220T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260220T130000 SUMMARY:EEPS Brown Bag CLASS:PUBLIC DESCRIPTION:This session is designed to allow Graduate Students in the EEPS \ndepartment to share their scientific elevator pitches\, give brief\nrese arch progress updates\, and identify potential collaborators.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19447 DTSTART;TZID=America/Chicago:20260326T190000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260326T200000 SUMMARY:2026 McDonnell Distinguished Lectures: Public Lecture with Andrea G hez\non From the Possibility to the Certainty of a Supermassive Black Hole CLASS:PUBLIC DESCRIPTION:Learn about new developments in the study of supermassive black holes.\nThrough the capture and analysis of twenty years of high-resoluti on\nimaging\, the UCLA Galactic Center Group has moved the case for a\nsup ermassive black hole at the center of our galaxy from a possibility\nto a certainty and provided the best evidence to date for the\nexistence of the se truly exotic objects.  This was made possible with\nthe first measurem ents of stellar orbits around a galactic nucleus.\nFurther advances in sta te-of-the-art high-resolution imaging\ntechnology on the world’s largest telescopes have greatly expanded\nthe power of using stellar orbits to st udy black holes. Recent\nobservations have revealed an environment around the black hole that\nis quite unexpected (young stars where there should b e none\, a lack of\nold stars where there should be many\, and a puzzling new class of\nobjects). Continued measurements of the motions of stars hav e solved\nmany of the puzzles posed by these perplexing populations of sta rs.\nThis work provides insight into how black holes grow and the role tha t\nthey play in regulating the growth of their host galaxies. \nMeasureme nts this past year of stellar orbits at the Galactic Center\nhave provided new insight on how gravity works near a supermassive\nhole\, a new and un explored regime for this fundamental force of\nnature.\n\nAndrea M. Ghez\, professor of Physics & Astronomy at UCLA and the\nLauren B. Leichtman & A rthur E. Levine chair in Astrophysics\, is one\nof the world’s leading e xperts in observational astrophysics and is\ndirector of UCLA’s Galactic Center Group.\n\nIn 2020\, she became the fourth woman to be awarded the Nobel Prize in\nPhysics for her independent discovery of a supermassive co mpact\nobject\, now generally recognized to be a black hole in the Milky\n Way’s galactic center. Her work on the orbits of stars at the center\nof the Milky Way has opened a new approach to studying black holes\,\nand he r group is currently focused on using this approach to\nunderstand the phy sics of gravity near a black hole and the role that\nblack holes play in t he formation and evolution of galaxies.\n\nAdvances in high-resolution ima ging technology enabled Professor\nGhez’s work and her group continues t o work on pushing the frontiers\nof these technologies forward. She serves on several leadership\ncommittees for the W.M. Keck Observatory in Hawaii \, which hosts the\nlargest telescopes in the world\, and the future Thirt y Meter\nTelescope.\n\nProfessor Ghez is also very committed to the commun ication of science\nto the general public and inspiring young girls to ent er the field of\nscience.\n\nShe earned her B.S. from MIT in 1987 and her PhD from Caltech in 1992\nand has been on the faculty at UCLA since 1994. She has won numerous\nawards\, including the Crafoord Prize in Astronomy f rom the Royal\nSwedish Academy of Science\, where she is the first woman t o win this\nprize in any field.\n\n_Header image: Keck Observatory (Credit : Ethan Tweedie Photography)_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19448 DTSTART;TZID=America/Chicago:20260325T163000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260325T173000 SUMMARY:2026 McDonnell Distinguished Lectures: Colloquium with Andrea Ghez on\nOur Galactic Center CLASS:PUBLIC DESCRIPTION:The proximity of our Galaxy's center presents a unique opportun ity to\nstudy a galactic nucleus with orders of magnitude higher spatial\n resolution than can be brought to bear on any other galaxy. After more\nth an a decade of diffraction-limited imaging on large ground-based\ntelescop es\, the case for a supermassive black hole at the Galactic\ncenter has go ne from a possibility to a certainty\, thanks to\nmeasurements of individu al stellar orbits. The rapidity with which\nthese stars move on small-scal e orbits indicates a source of\ntremendous gravity and provides the best e vidence that supermassive\nblack holes\, which confront and challenge our knowledge of fundamental\nphysics\, do exist in the Universe. This work wa s made possible through\nthe use of speckle imaging techniques\, which cor rect for the blurring\neffects of the Earth's atmosphere in post-processin g and allowed the\nfirst diffraction-limited images to be produced with th ese large\nground-based telescopes.\n\nFurther progress in high-angular re solution imaging techniques on\nlarge\, ground-based telescopes has result ed in the more sophisticated\ntechnology of adaptive optics\, which correc ts for these effects in\nreal time. This has increased the power of imagin g by an order of\nmagnitude and permitted spectroscopic study at high reso lution on\nthese telescopes for the first time. With adaptive optics\,\nhi gh-resolution studies of the Galactic center have shown that what\nhappens near a supermassive back hole is quite different than what\ntheoretical m odels have predicted\, which changes many of our notions\non how galaxies form and evolve over time. By continuing to push on\nthe cutting-edge of h igh-resolution technology\, we have been able to\ncapture the orbital moti ons of stars with sufficient precision to test\nEinstein’s General Theor y of Relativity in a regime that has never\nbeen probed before.\n\nAndrea M. Ghez\, professor of Physics & Astronomy at UCLA and the\nLauren B. Leic htman & Arthur E. Levine chair in Astrophysics\, is one\nof the world’s leading experts in observational astrophysics and is\ndirector of UCLA’s Galactic Center Group.\n\nIn 2020\, she became the fourth woman to be awa rded the Nobel Prize in\nPhysics for her independent discovery of a superm assive compact\nobject\, now generally recognized to be a black hole in th e Milky\nWay’s galactic center. Her work on the orbits of stars at the c enter\nof the Milky Way has opened a new approach to studying black holes\ ,\nand her group is currently focused on using this approach to\nunderstan d the physics of gravity near a black hole and the role that\nblack holes play in the formation and evolution of galaxies.\n\nAdvances in high-resol ution imaging technology enabled Professor\nGhez’s work and her group co ntinues to work on pushing the frontiers\nof these technologies forward. S he serves on several leadership\ncommittees for the W.M. Keck Observatory in Hawaii\, which hosts the\nlargest telescopes in the world\, and the fut ure Thirty Meter\nTelescope.\n\nProfessor Ghez is also very committed to t he communication of science\nto the general public and inspiring young gir ls to enter the field of\nscience.\n\nShe earned her B.S. from MIT in 1987 and her PhD from Caltech in 1992\nand has been on the faculty at UCLA sin ce 1994. She has won numerous\nawards\, including the Crafoord Prize in As tronomy from the Royal\nSwedish Academy of Science\, where she is the firs t woman to win this\nprize in any field.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19433 DTSTART;TZID=America/Chicago:20260226T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260226T123000 SUMMARY:EEPS Colloquium: John Higgins CLASS:PUBLIC DESCRIPTION:MIOCENE AND PLIOCENE CLIMATE FROM EARTH'S OLDEST ICE CORES\n\nH ost: David Fike\n\n_EEPS Colloquia are made possible by the William C. Fer guson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19432 DTSTART;TZID=America/Chicago:20260423T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260423T123000 SUMMARY:Special Brown Bag: The state of Creve Coeur Lake under changing\nen vironmental pressures\, management\, and conservation practices CLASS:PUBLIC DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19431 DTSTART;TZID=America/Chicago:20260306T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260306T125000 SUMMARY:EEPS Brown Bag: Dr. Jacob Fowler - UPenn CLASS:PUBLIC DESCRIPTION:EXPERIMENTAL CONSTRAINTS ON THE RHEOLOGY OF ICE STREAM SHEAR MA RGINS\n\nAccurately predicting ice-sheet mass balance and associated sea-l evel\nrise requires understanding ice behavior in two previously unexplore d\nregimes: at very high temperature\, where the ice is at its melting\npo int\, and at very high strain. In large ring-shear experiments\, we\nfind that temperate ice—at its pressure-melting temperature and\ncontaining i ntergranular water—is linear-viscous (n ≈ 1)\, in\ncontrast to the no nlinear flow law typically used in ice-sheet models\n(n ≈ 3–4). This linearity likely results from Harper-Dorn\ndislocation glide and may stabi lize modeled ice-sheet responses to\nstress changes caused from ice shelf disintegration.\n\nTo investigate weakening at high strain relevant to she ar margins\, we\nare conducting torsion experiments on ice to shear strain s exceeding\n300%\, capturing the coupled evolution of grain size and\ncry stallographic fabric. By combining strain-rate-stepping tests with\nmicros tructural analysis\, we will isolate the relative roles of\ngrain-size red uction and fabric development in strain softening.\nTogether\, these resul ts will provide experimental constraints on the\nstrain-dependent enhancem ent factor in ice and the magnitude of its\nviscous anisotropy\, improving predictions of strain localization in\nice stream shear margins.\n\n \n\ nHost: Dougal Hansen\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19428 DTSTART;TZID=America/Chicago:20260227T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260227T125000 SUMMARY:EEPS Brown Bag: Earth Data Challenge CLASS:PUBLIC DESCRIPTION:The Earth Data Challenge (EDC) is a semester-long\, team-based program\nhosted by GRI [https://geospatial.washu.edu] and EEPS\n[https://e eps.washu.edu]. Participants learn modern Earth data\nworkflows - cloud co mputing\, Jupyter notebooks\, and remote sensing -\nwhile working collabor atively on projects using hyperspectral\nsatellite data.\n\nNo prior progr amming experience required.\n\nMore Information [https://washu-eeps.github .io/EDC-2026/]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19429 DTSTART;TZID=America/Chicago:20260320T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260320T125000 SUMMARY:EEPS Brown Bag: Earth Data Challenge CLASS:PUBLIC DESCRIPTION:The Earth Data Challenge (EDC) is a semester-long\, team-based program\nhosted by GRI [https://geospatial.washu.edu] and EEPS\n[https://e eps.washu.edu]. Participants learn modern Earth data\nworkflows - cloud co mputing\, Jupyter notebooks\, and remote sensing -\nwhile working collabor atively on projects using hyperspectral\nsatellite data.\n\nNo prior progr amming experience required.\n\nMore information [https://washu-eeps.github .io/EDC-2026/]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19430 DTSTART;TZID=America/Chicago:20260424T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260424T125000 SUMMARY:EEPS Brown Bag: Earth Data Challenge CLASS:PUBLIC DESCRIPTION:The Earth Data Challenge (EDC) is a semester-long\, team-based program\nhosted by GRI [https://geospatial.washu.edu] and EEPS\n[https://e eps.washu.edu]. Participants learn modern Earth data\nworkflows - cloud co mputing\, Jupyter notebooks\, and remote sensing -\nwhile working collabor atively on projects using hyperspectral\nsatellite data.\n\nNo prior progr amming experience required.\n\nMore Information [https://washu-eeps.github .io/EDC-2026/]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19427 DTSTART;TZID=America/Chicago:20260213T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260213T125000 SUMMARY:EEPS Brown Bag: Earth Data Challenge CLASS:PUBLIC DESCRIPTION:The Earth Data Challenge (EDC) is a semester-long\, team-based program\nhosted by GRI [https://geospatial.washu.edu] and EEPS\n[https://e eps.washu.edu]. Participants learn modern Earth data\nworkflows - cloud co mputing\, Jupyter notebooks\, and remote sensing -\nwhile working collabor atively on projects using hyperspectral\nsatellite data.\n\nNo prior progr amming experience required.\n\nMore Information [https://washu-eeps.github .io/EDC-2026/]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19426 DTSTART;TZID=America/Chicago:20260130T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260130T125000 SUMMARY:EEPS Brown Bag: Earth Data Challenge CLASS:PUBLIC DESCRIPTION:EARTH DATA CHALLENGE (EDC): EEPS and GRI\n[https://geospatial.w ashu.edu/] are hosting the Earth Data Challenge -\na team-based program wh ere students learn cloud computing\, Jupyter\nnotebooks\, and remote sensi ng workflows. Teams work independently over\nthe semester with regular che ck-ins and support along the way. It's a\nchance to build practical\, care er-relevant skills while collaborating\nacross disciplines.\n \nOpen to u ndergraduates\, graduates\, and postdocs in any field. No prior\nprogrammi ng experience required.\n \nMore information [https://washu-eeps.github.i o/EDC-2026/] DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19422 DTSTART;TZID=America/Chicago:20260305T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260305T123000 SUMMARY:EEPS Colloquium: Sarah Stamps CLASS:PUBLIC DESCRIPTION:ISOLATING THE EFFECTS OF GLACIAL ISOSTATIC ADJUSTMENT (GIA) IN THE\nCHESAPEAKE BAY FROM A NEW GNSS-CONSTRAINED VERTICAL LAND MOTION (VLM) \nSOLUTION\n\nHost: Doug Wiens\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19421 DTSTART;TZID=America/Chicago:20260122T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260122T123000 SUMMARY:EEPS Colloquium: Jacob Jordan CLASS:PUBLIC DESCRIPTION:ENHANCED ROCK WEATHERING FOR IMPROVED SMALLHOLDER FARMER WELFAR E: AN\nAT-SCALE CASE STUDY FOR RICE AGRICULTURE IN INDIA\n\nHost: Eric Hia tt\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19420 DTSTART;TZID=America/Chicago:20260402T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260402T123000 SUMMARY:EEPS Colloquium: Tamlin Pavelsky CLASS:PUBLIC DESCRIPTION:THE SURFACE WATER AND OCEAN TOPOGRAPHY MISSION: A NEW EYE IN TH E SKY\nFOR EARTH’S WATER\n\nHost: Roger Michaelides\n\n_EEPS Colloquia a re made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19419 DTSTART;TZID=America/Chicago:20260409T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260409T123000 SUMMARY:EEPS Colloquium: Tripti Bhattacharya CLASS:PUBLIC DESCRIPTION:PERSPECTIVES ON 21ST CENTURY EXTREME RAINFALL FROM THE WARM PLI OCENE\n\nHost: Bronwen Konecky\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19418 DTSTART;TZID=America/Chicago:20260219T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260219T123000 SUMMARY:EEPS Colloquium: Emma \"Mickey\" MacKie CLASS:PUBLIC DESCRIPTION:GEOPHYSICAL EXPLORATION OF THE SUBGLACIAL LANDSCAPE\n\nHost: Do ugal Hansen\n\n_EEPS Colloquia are made possible by the William C. Ferguso n Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19417 DTSTART;TZID=America/Chicago:20260129T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260129T123000 SUMMARY:EEPS Colloquium: Anne Hofmeister Retirement Lecture CLASS:PUBLIC DESCRIPTION:INTEGRATING FORCES\, RADIATION\, HEAT TRANSFER AND THERMODYNAMI CS AND\nTHE MANY IMPLICATIONS FOR THE PHYSICAL SCIENCES\n\nResearch Profes sor Emeritus Anne Hofmeister will deliver her\nretirement lecture as part of our colloquium series. A reception with\nlight refreshments will take p lace immediately following the lecture\nin Rudolph 302. \n \n\nHost: Dav id Fike\n\n_EEPS Colloquia are made possible by the William C. Ferguson Fu nd_\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19416 DTSTART;TZID=America/Chicago:20260115T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260115T123000 SUMMARY:EEPS Colloquium: Jeffrey Catalano CLASS:PUBLIC DESCRIPTION:CRITICAL LINKS BETWEEN TRACE ELEMENT BIOGEOCHEMISTRY AND CLIMAT E\,\nRESOURCES\, AND PUBLIC HEALTH\n\nTrace elements play diverse roles in Earth systems\, serving as\nbioessential micronutrients for microbial and plant life\, critical\nminerals for energy production and catalysis\, and environmental\nhazards to human health. Their distribution\, migration\, accumulation\,\nand bioavailability are governed by a complex interplay of competitive\nand cooperative biogeochemical processes. In this talk\, I w ill explore\nthree environmental challenges influenced by trace element\nb iogeochemistry: (1) the impact of trace metal availability on the\nproduct ion and decomposition of greenhouse gases in wetland soils\, (2)\nthe role of mineral-water reactions in weathering zones in controlling\nthe mobili ty and accumulation of critical minerals in new resource\noccurrences\, an d (3) the influence of spatial patterns of lead in\nurban soils on residen tial lead exposure. I will present potential\nstrategies for addressing th ese environmental challenges through the\nlens of trace element biogeochem istry.\n\nHost: David Fike\n\n_EEPS Colloquia are made possible by the Wil liam C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19414 DTSTART;TZID=America/Chicago:20260205T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260205T123000 SUMMARY:EEPS Colloquium: Sherilyn Fritz CLASS:PUBLIC DESCRIPTION:THE CENOZOIC EVOLUTION OF THE AMAZON’S GEOPHYSICAL LANDSCAPE AND\nTROPICAL FORESTS\n\nHost: David Fike\n\n_EEPS Colloquia are made poss ible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19412 DTSTART;TZID=America/Chicago:20260423T150000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260423T173000 SUMMARY:EEPS Undergraduate Symposium CLASS:PUBLIC DESCRIPTION:ORAL PRESENTATIONS:\n\n_Investigating the Prospect for Sediment ary Cover on Venus_ by Tatum\nMerges\n \n_Beneath the Reservoir: A Case f or a Hydrosocial-Morphological\nFramework in Lake Mead_ by Julia Prata\n  \n_Microstructural Evolution of Carrara Marble with Complex Strain\nHistor ies_ by Jack Qidiao\n \n_Amphibole-Melt Halogen Partitioning and Diffusio n in SuperHydrous\nMagmas_ by Tomás Salazar\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19411 DTSTART;TZID=America/Chicago:20260319T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260319T123000 SUMMARY:EEPS Colloquium - Stephen Zatman Memorial Lecture: Harriet Lau CLASS:PUBLIC DESCRIPTION:EARTH'S CORE AND MANTLE: IMMISCIBLE(ISH) BUT INTERTWINED\n\nHos t: Doug Wiens\n\n_This colloquium is made possible by the Stephen Zatman M emorial Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19410 DTSTART;TZID=America/Chicago:20260320T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260320T203000 SUMMARY:How to Detect & Characterize Exoplanets: The St. Louis Astronomical \nSociety March Meeting CLASS:PUBLIC DESCRIPTION:Exoplanets are planets that orbit other stars. Over six thousan d\nexoplanets have been detected since the first one was discovered\nthirt y-five years ago. Observation\, particularly from space\ntelescopes\, has enabled the detection of numerous planetary systems\nand the characterizat ion of the different planets that compose them.\nDuring this presentation\ , Dr. Ollivier will focus on the potential of\nphotometry and spectrophoto metry of planetary transits. Dr. Ollivier\nwill explain this method and th e different exoplanet observables it\nreveals. He will also demonstrate th e full potential of this technique\nby illustrating it with a few concrete examples. Finally\, he will show\nhow two highly complementary observator ies\, the James Webb Space\nTelescope and the European ARIEL spacecraft\, will very soon be able to\nprovide us with information that will give us a better understanding\nof the formation and evolution of exosystems.\n\nDr . Olivier is an astronomer at the Institut d'Astrophysique Spatiale\nd'Ors ay (IAS - CNRS / Univ Paris-Saclay\, France)\, where he contributes\nto th e development of space instrumentation for the detection and\ncharacteriza tion of exoplanets. He contributed to the development and\nscientific ope ration of the European CoRoT space mission. He is now\nthe instrument scie ntist for AIRS\, the infrared spectrometer on ESA's\nARIEL mission dedicat ed to the spectroscopy of several hundred\nexoplanets.\n\n_The St. Louis A stronomical Society is an organization for individuals\ninterested in astr onomy and telescopes. The public is invited to\nattend its meetings\, tele scope observing sessions\, and special events.\nFor more information about Astronomical Society events\, please visit\n__www.slasonline.org_ [http:/ /www.slasonline.org]_._\n\n_Free parking will be available._\n\n_Header im age: Artist’s concept of how rocky\, potentially habitable\nworlds elsew here in our galaxy might appear. Data gathered by\ntelescopes in space and on the ground suggest that small\, rocky\nplanets are common. (Placing th em so close together in a line is for\nillustrative purposes only.) NASA/J PL-Caltech/R. Hurt (SSC-Caltech)_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19409 DTSTART;TZID=America/Chicago:20260220T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260220T203000 SUMMARY:AI and the Smart Telescope: How Both May Change Amateur Astronomy: The\nSt. Louis Astronomical Society February Meeting CLASS:PUBLIC DESCRIPTION:“Smart telescopes” are instruments that use computer assist ance to\nlocate astronomical targets and track them\, and artificial\ninte lligence to aid in taking pictures. A basic setup\, with a\nmodest-sized t elescope\, can already take medium to high quality images\nof deep space o bjects. The smart telescope does everything - aligning\,\nsearching\, trac king\, imaging\, storing\, cleaning\, and processing images\n- with just t he push of a button.\n\nDr. Ponce de Leon will explain how advances in tec hnology will soon\nenable an amateur’s smart telescope to join and use l arge databases\nof astronomical objects. This will allow international ama teur\nscientists to assist professional astronomers in real time as they\n image faint star clusters\, galaxies\, and nebulae.\n\nDr. Ponce de Leon i s an amateur astronomer and retired instructor of\ntechnology and innovati on\, international business and strategic\nmanagement at Southern Illinois University and several institutions in\nHong Kong\, Taiwan\, South Korea and Singapore.\n\n_The St. Louis Astronomical Society is an organization f or individuals\ninterested in astronomy and telescopes. The public is invi ted to\nattend its meetings\, telescope observing sessions\, and special e vents.\nFor more information about Astronomical Society events\, please vi sit\n__www.slasonline.org_ [http://www.slasonline.org]_._\n\n_Free parking will be available._\n\n_Header image: An artist's illustration shows that the stars in the\nTOI 1338 system make an eclipsing binary — they circl e each other in\nour plane of view. If you could hover near the planet TOI 1338 b\, you\nwould see an eclipse every 15 days. Credit: NASA's Goddard Space\nFlight Center/Chris Smith (USRA)_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19408 DTSTART;TZID=America/Chicago:20260116T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20260116T203000 SUMMARY:Planets with Two Suns: The St. Louis Astronomical Society January\n Meeting CLASS:PUBLIC DESCRIPTION:Binary stars\, which are two suns orbiting each other\, offer a unique\nwindow into how planets form and survive in complex environments. In\nthis talk\, Dr. Esmer will explore how astronomers study these system s\nand search for their planets using a powerful technique called eclipse\ ntiming variations (ETVs). By carefully measuring tiny shifts in the\ntimi ng of stellar eclipses\, even with modest telescopes\, astronomers\ncan un cover hidden planets and learn about stellar interactions\,\nevolution\, a nd magnetic activity. Because ETV studies rely on\nlong-term monitoring\, they provide an exciting opportunity for\ncontributions from both professi onal and amateur observers.\n\nDr. Ekrem M. Esmer is a McDonnell Center Po stdoctoral Fellow in the\nDepartment of Physics at Washington University i n St. Louis\, where he\nstudies planets orbiting binary star systems. He e arned his PhD in\nAstrophysics from Ankara University in Turkey\, focusing on the orbital\ndynamics and stability of planets in multiple-star enviro nments. His\ncurrent research combines space telescope data and advanced a nalysis\ntechniques to search for and characterize circumbinary planets. O ne\ngoal is to understand how abundant such worlds are in our galaxy.\n\n_ The St. Louis Astronomical Society is an organization for individuals\nint erested in astronomy and telescopes. The public is invited to\nattend its meetings\, telescope observing sessions\, and special events.\nFor more in formation about Astronomical Society events\, please visit\n__www.slasonli ne.org_ [http://www.slasonline.org]_._\n\n_Free parking will be available. _\n\n_Header image: An artist's illustration shows that the stars in the\n TOI 1338 system make an eclipsing binary — they circle each other in\nou r plane of view. If you could hover near the planet TOI 1338 b\, you\nwoul d see an eclipse every 15 days. Credit: NASA's Goddard Space\nFlight Cente r/Chris Smith (USRA)_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19407 DTSTART;TZID=America/Chicago:20251219T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251219T203000 SUMMARY:The Ultraview Effect: The St. Louis Astronomical Society December\n Meeting CLASS:PUBLIC DESCRIPTION:Deana Weibel\, Professor of Anthropology\, Grand Valley State U niversity\nin Allendale\, Michigan will be discussing the phenomenon known as the\n\"ultraview effect.“ The \"ultraview effect\" refers to the int ense\nfeelings of awe and humility experienced by astronauts who see the\n vastness of the universe\, particularly the Milky Way\, from orbit. This\n is distinct from the \"overview effect\,\" which is the cognitive shift\nf rom seeing Earth from space. The ultraview effect is considered a\nrespons e to confronting the unknown\, which can be unsettling but also\ninspiring \, driving a desire for exploration and discovery. Comparing\nspacefarers to religious pilgrims\, Weibel suggests that this\nexperience of deep humi lity is a generative reaction to awe\, which\ninspires exploration and adv enture.\n\nDeana Weibel is a cultural anthropologist with over 25 years of \nexperience in ethnographic research and university teaching. Her work\nf ocuses primarily on religion\, especially the topics of pilgrimage\,\nsacr ed space\, the mutual influence of scientific and religious ideas\non each other\, and religion and space exploration. Her early fieldwork\ntook pla ce in France at pilgrimage sites (sometimes understood by\npilgrims as “ energy” sites) like Rocamadour and Montségur. She\nhas also conducted r esearch at the pilgrimage center of Chimayó\, New\nMexico. More recent wo rk focuses on religion as a motivation for and\ninfluence on space travel and outer space-based sciences\, with field\nvisits taking place at \"spac e sites\" throughout the U.S.\, including\nthe Johnson and Kennedy Space C enters\, the Mojave Air and Spaceport\,\nthe Jet Propulsion Laboratory\, t he JHU Applied Physics Lab\, and\nSpaceport America. Weibel spent a month in 2019 at the Vatican\nObservatory\, studying \"the Pope's Astronomers.\" She has also studied\nthe history of anthropology\, particularly the over lap of her own\nfamily’s role and the role of anthropology in the exhibi tion of\nPhilippine Igorot people in fairs and expositions during the earl y\n1900s. She is the co-founder and co-organizer of Roger That! A\nCelebra tion of Space Exploration in Honor of Roger B. Chaffee\, a\ntwo-day confer ence that has been an annual Grand Rapids\, Michigan\nevent since 2017. Sh e served as chair for GVSU's Anthropology\nDepartment from 2012-2018 and a s interim chair for GVSU's\nInterdisciplinary\, Religious\, and Intercultu ral Studies Department\nfrom 2021-2022.\n\n_The St. Louis Astronomical Soc iety is an organization for individuals\ninterested in astronomy and teles copes. The public is invited to\nattend its meetings\, telescope observing sessions\, and special events.\nFor more information about Astronomical S ociety events\, please visit\n__www.slasonline.org_ [http://www.slasonline .org]_._\n\n_Free parking will be available._\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19403 DTSTART;TZID=America/Chicago:20251205T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251205T130000 SUMMARY:Brown Bag: Kun Wang CLASS:PUBLIC DESCRIPTION:Associate Professor Kun Wang will present _Revisiting The Solar System\nBulk Composition Through Asteroid Bennu Samples._\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19399 DTSTART;TZID=America/Chicago:20251121T150000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251121T163000 SUMMARY:From Variable Stars to Dark Matter – The Expanding Legacy of\nHen rietta Leavitt CLASS:PUBLIC DESCRIPTION:Henrietta Swan Leavitt’s early twentieth-century discovery of a\nrelationship between the brightness of certain stars named \"Cepheid\n variables” and the duration of their brightness cycles transformed\nastr onomy. By showing that a star’s intrinsic luminosity could be\ninferred from its variation period\, Leavitt provided the first\nreliable method fo r measuring astronomical distances beyond our galaxy\nand established the foundation for what became known as the cosmic\ndistance ladder. Her work made it possible to determine the accurate\nscale of the Milky Way\, ident ify other galaxies beyond it\, and\neventually measure the expansion of th e Universe itself. In this\ncolloquium\, Dr. Tansu Daylan and several memb ers of the AstroMusers\nresearch group in the Department of Physics will f ollow the\ndevelopments stemming from her discovery\, beginning with her\n meticulous analysis of variable stars and tracing how precise\nphotometric measurements enabled a deeper understanding of stellar\nevolution\, inclu ding the formation and cooling of white dwarfs. The\ndiscussion will then move outward to the galactic scale\, where\nLeavitt’s relation revealed the immensity of space and led to the\nrecognition of galaxies as dynamic\ , independent systems. Finally\, the\ncolloquium will examine one of the m ost significant frontiers of\nmodern astrophysics—the detection of dark matter—whose\ngravitational effects determine the rotation of galaxies\, the binding\nof clusters\, and the growth of large-scale cosmic filaments \, even\nthough it emits no light of its own. Across these themes runs a s ingle\nunifying idea: careful observation and the disciplined use of light as\ndata remain central to how astronomers uncover both the visible and\n hidden structure of the Universe.\n\n THIS EVENT WILL TAKE PLACE IN SEIGL E HALL\, ROOM 206. DOWNLOAD A\nCAMPUS MAP HERE\n[https://admissions.washu. edu/app/uploads/2025/03/CRTV-6062-Parking-Folded-Map_map-only-for-web_FINA L.pdf].\n\nDR. TANSU DAYLAN is an assistant professor in the Department of \nPhysics and leads a research program focused on atmospheric\ncharacteriz ation of exoplanets and the astrophysical signatures of\ndark matter. He i s the Principal Investigator for one of the Wide\nField Science Programs o f NASA's upcoming Roman Space Telescope.\nMembers of his AstroMusers resea rch group\, Aavik Wadivkar\, Bryce\nWedig\, and Dr. Chris Cappiello\, work on contemporary astrophysical\nproblems. Aavik is an undergraduate majori ng in astrophysics\, doing a\nresearch project on planets transiting white dwarfs. Bryce is a\nfourth-year PhD student in physics working on cosmic gravitational\nlenses\, and Chris is an Ed Jaynes postdoctoral fellow in t he\nDepartment of Physics focusing on particle properties of dark\nmatter.  \n\nDR. CHRIS CAPPIELLO is an Edwin Thompson Jaynes Postdoctoral Fellow in\nthe Department of Physics. He received his PhD in 2021 from Ohio\nStat e\, after which he was a postdoctoral fellow at Queen's University\nin Kin gston\, Canada\, before joining the Department at WashU in 2024.\nHis rese arch focuses on dark matter theory\, finding new ways to use\nparticle det ectors\, telescopes\, and astrophysics generally to search\nfor dark matte r.  Although he is a theorist\, Chris has collaborated\nwith experimental groups in the past\, identifying new models of dark\nmatter that their de tectors could search for.\n\n \n\nBRYCE WEDIG is a fourth-year PhD candid ate in Physics studying dark\nmatter using space telescopes. He studied ph ysics and philosophy at\nKenyon College and philosophy of physics at the U niversity of\nCambridge.\n\n \n\nAAVIK WADIVKAR is a sophomore undergradu ate student studying\nAstrophysics and Philosophy. He's involved in exopla net research\,\nsearching for planets orbiting around White Dwarfs and con tributing to\nExoCore\, a NASA-funded curriculum of open science for the f ield of\nexoplanets. He also acts as President of WashU Satellite\, an\nun dergrad-led engineering design team that develops and builds\nsatellites a nd space-ready science missions for WashU research. He's\npassionate about the intersection of science and philosophy and how we\nunderstand the wor ld around us.\n\n> Learn more about the upcoming Performing Arts D epartment production\n> of _Silent Sky_ [https://pad.washu.edu/events /silent-sky]_ _and get\n> tickets here [https://ci.ovationtix.com/356 74/production/1246463]!\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19398 DTSTART;TZID=America/Chicago:20251118T180000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251118T190000 SUMMARY:Running COSMOS.exe: Astronomy on Tap CLASS:PUBLIC DESCRIPTION: [Flyer for Astronomy on Tap's November 2025 event] \nDR. YAJIE YUAN — _Feeding the Beast: How Black Holes Dine and\nShine_\nAt the he art of every galaxy lurks a hungry black hole. But what does\nit really me an for a black hole to “feed”? In this talk\, we’ll\ndive into state -of-the-art computer simulations that capture\, from\nfirst principles\, h ow gas swirls\, crashes\, and lights up around the\nblack holes in our own Milky Way and in M87 — the first black hole\never imaged. Come see how theory\, supercomputers\, and the Event\nHorizon Telescope are helping us decode the messy\, beautiful physics\nof black hole accretion.\n\nDR. ALEX CHEN — _Pulsars\, the Lighthouses of the Cosmos_\nPulsars are rapidly rotating remnants of stars after they reach the\nend of their lifecycle. T hey possess some of the strongest magnetic\nfields known in the universe. Chen will describe how we observe these\nobjects\, and how we infer their physical properties from these\nobservations.\n\nJoin Astronomy on Tap for an evening of science\, beer\, and cosmic fun\n— exploring how supercom puters help us understand the universe.\nThere will be Astro Trivia with p rizes after the talks.\n\n? Grab a drink\, meet fellow space nerds\, and e njoy Astronomy on Tap:\nSt. Louis!\n\nFree & open to all — no registrati on needed.\n\nAstronomy on Tap STL [https://www.facebook.com/AstronomyOnTa pSTL]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19397 DTSTART;TZID=America/Chicago:20251121T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251121T203000 SUMMARY:The Making of an Enterprise: How Star Trek Helped NASA Dream Big an d\nHow NASA Helped Star Trek Survive: The St. Louis Astronomical Society\n November Meeting CLASS:PUBLIC DESCRIPTION:Glen Swanson will explain how NASA\, the Smithsonian\, and the aerospace\ncommunity helped craft\, legitimize\, and popularize the vintag e\ntelevision show Star Trek. Star Trek creator Gene Roddenberry sought\nt o create a work of science fiction that would immerse viewers through\ncle ver storylines and impressive visual effects. But he also wanted to\nprese nt the story in a scientific and technological context that felt\nbelievab le. To this end\, Roddenberry\, a former WWII combat pilot\, used\nhis con nections in the aerospace industry to seek out the latest and\ngreatest te chnology. The result was an entertaining science fiction\nfranchise that i nspired a generation to consider a career in science\nand engineering.\n\n Swanson holds a B.S. in History from Western Michigan University and\nan M .S. in Space Studies from the University of North Dakota. From\n1998 to 20 02\, he served as Chief Historian of NASA's Johnson Space\nCenter. While t here he edited the anthology _Before This Decade Is\nOut… Personal Refle ctions on the Apollo Program _and co-authored\nother technical publication s. Swanson founded _Quest: The History of\nSpaceflight Quarterly_\, now in its thirty-second year and recipient of\nthe American Astronomical Societ y's Ordway Award for Sustained\nExcellence in Spaceflight History.\n\n_The St. Louis Astronomical Society is an organization for individuals\nintere sted in astronomy and telescopes. The public is invited to\nattend its mee tings\, telescope observing sessions\, and special events.\nFor more infor mation about Astronomical Society events\, please visit\n__www.slasonline. org_ [http://www.slasonline.org]_._\n\n_Free parking will be available._\n \n_Header image by __p2722754_\n[https://pixabay.com/users/p2722754-153348 46/?utm_source=link-attribution&utm_medium=referral&utm_campaign=image&utm _content=5138940]_\nfrom __Pixabay_\n[https://pixabay.com//?utm_source=lin k-attribution&utm_medium=referral&utm_campaign=image&utm_content=5138940]\ n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19392 DTSTART;TZID=America/Chicago:20251204T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251204T123000 SUMMARY:EEPS Colloquium: Grace Barcheck CLASS:PUBLIC DESCRIPTION:RESPONSE OF THE BASAL HYDROLOGIC NETWORK TO SPRING MELT ONSET\, \nGREENLAND ICE SHEET\n\nHow the Greenland Ice Sheet ablation zone respond s to basal meltwater\ninput depends partly on the shape and evolution of t he subglacial\ndrainage network\, which is difficult to observe. This netw ork is\nthought to be a patchwork of water-filled cavities\, saturated til l\,\nand efficient conduits\, with variable connectivity among patches and \nto moulins\, and with variable effects on basal friction. To document\nt he structure of this connectivity in West Greenland during the onset\nof m elt in 2018\, we recorded changes in dozens of families of high\nfrequency repeating basal icequakes\, which have stick-slip\, basal\ncrevassing\, o r ambiguous mechanisms. Repeating basal stick-slip and\ncrevassing events can respond to changes in basal hydrology\, and we\nevaluate each family f or continuity across melt onset. We interpret\nrepeaters that don’t chan ge in response to melt onset as indicating\n bed regions that are hydraul ically isolated from moulins\, while\nevents that disappear or change indi cate more-connected bed regions.\nGeodetic data show limited local sliding acceleration until several\nweeks later\, implying that basal seismicity changes result primarily\nfrom changes in basal hydrology\, not sliding. R epeaters affected and\nunaffected by melt onset are interspersed at sub-km scales\, indicating\nthat connected versus isolated regions of the hydrol ogic network are\nlikewise interspersed. Interestingly\, basal seismicity patterns appear\nunrelated to formation of a subglacial channel also recor ded by the\nnetwork. These results suggest that subglacial hydraulic conne ctedness\ncan vary over short distances\, and that seismic observations of \nicequakes are a useful way to observe hydrologic evolution.\n\nHost: Dou gal Hansen\n\n_ EEPS Colloquia are made possible by the William C. Fergus on Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19391 DTSTART;TZID=America/Chicago:20251120T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251120T123000 SUMMARY:EEPS Colloquium: Joe Guinness CLASS:PUBLIC DESCRIPTION:SPATIAL STATISTICS AND GAUSSIAN PROCESS MODELING IN THE EARTH\n SCIENCES \n\n_EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19390 DTSTART;TZID=America/Chicago:20251113T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251113T123000 SUMMARY:EEPS Colloquium: Nicole Nie CLASS:PUBLIC DESCRIPTION:ISOTOPIC INSIGHTS INTO MOON FORMATION AND SURFACE EVOLUTION\n\n The Moon is significantly depleted in moderately volatile elements\n(MVEs) relative to Earth\, a signature commonly linked to its energetic\norigin involving a giant impact and subsequent global magma ocean.\nWhile most vo latile loss likely occurred during this early stage\,\ncontinued loss from the lunar surface through space weathering has\nfurther modified the Moon ’s volatile inventory. Isotopic\ncompositions of MVEs provide key constr aints on both the early\nhigh-temperature depletion and the later surface weathering processes.\n\nIn this presentation\, I will examine MVE isotopi c variations in both\nigneous samples and lunar soils to assess the mechan isms of volatile\nloss. Isotopic data from lunar basalts help distinguish among\ncompeting models for early lunar volatile depletion and support an\ nevaporative loss scenario in the proto-lunar disk. In addition\,\nisotopi c enrichments in lunar soils reflect ongoing space weathering\,\nindicatin g that micrometeorite impacts are a dominant process\ntransferring surface atoms into the transient lunar exosphere and\nultimately into space.\n\n_ EEPS Colloquia are made possible by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19383 DTSTART;TZID=America/Chicago:20251120T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251123T140000 SUMMARY:Silent Sky CLASS:PUBLIC DESCRIPTION:Working alongside the serious Annie Jump Cannon and quick-witte d\nWilliamina Fleming\, Henri perseveres against professional bias and\npe rsonal doubt in her pursuit of scientific discovery that will change\nour understanding of the universe forever. But as she seeks answers\nin the s tars\, can Henri also build a life for herself on Earth? A\nstory of space \, symphonies\, science and self-determination\, _Silent\nSky_ sheds light on Leavitt’s impactful life to remind us all how\nvast and beautiful th is universe is.\n\nPerforming Arts Department alum Ellen Schaaf (MA 2025) returns to\ndirect.\n\nBy Lauren Gunderson\nDirected by Ellen Schaaf (MA 2 025) \nNovember 20\, 21 & 22 at 7:30 p.m.\nNovember 22 & 23 at 2:00 p.m.\ nA.E. Hotchner Studio Theatre\n\nBONUS EVENT! PAD has partnered with the W ashU Physics Department for a\ncolloquium that celebrates the work of Henr ietta Leavitt and explores\nthe continued scientific developments stemming from her discovery.\nLearn more here!\n[https://pad.washu.edu/events/vari able-stars-dark-matter-expanding-legacy-henrietta-leavitt]\n\n_Tickets are FREE to all WashU students with valid ID. To reserve your\nticket\, pleas e visit the Washington University Box Office or call\n314-935-6543. You ca n also claim a free ticket the night of at the box\noffice window._\n\nBEW ARE OF SCAMS! Tickets purchased through the Washington University\nBox Off ice or online via AudienceView (also known as OvationTix) are\nthe only ap proved tickets for this event. Purchases made through a\nthird-party vendo r such as StubHub\, Ticketmaster\, or MetroTix will NOT\nbe valid for entr y to the Theater.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19382 DTSTART;TZID=America/Chicago:20251031T110000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251031T120000 SUMMARY:Center for Aerosol Science and Engineering (CASE) Distinguished\nLe cture: Professor Paul Wennberg CLASS:PUBLIC DESCRIPTION:CLIMATE CHANGE AND THE NORTHERN FORESTS\n\nThe northern high la titude land is warming faster than anywhere else\non Earth. The increase i n temperature is altering the boreal forests\n– spring comes earlier\, a nd water limitations are increasing\nresulting in more extreme fire. Advan ces in remote sensing offers an\nopportunity to evaluate the changing bore al forests. In this study\, we\nuse such observations from multiple sensor s to map and diagnose the\nchanges in ecology and in the uptake and releas e of carbon from the\nhigh latitude forests. These data suggest that the n ext decades will\nbe characterized by rapid changes in the landscape of bo real America\nand Eurasia.\n\nPaul Wennberg is the R. Stanton Avery Profes sor of Atmospheric\nChemistry and Environmental Science and Engineering at the California\nInstitute of Technology. He received his PhD in physical chemistry\nfrom Harvard in 1994. His research group studies atmospheric\nc omposition using laboratory\, in situ\, and remote sensing tools. He\nserv ed as the first chair of the Total Carbon Column Observing Network\n(TCCON ) and was a founding member of NASA’s Orbiting Carbon\nObservatory (OCO) project. He is a member of U.S. National Academy of\nSciences and a MacAr thur Fellow.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19379 DTSTART;TZID=America/Chicago:20251004T200000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251004T230000 SUMMARY:International Observe the Moon Night CLASS:PUBLIC DESCRIPTION:International Observe the Moon Night\n[https://web.archive.org/ web/20250209215944/https://moon.nasa.gov/observe-the-moon-night/]\nis a ti me to come together with fellow Moon enthusiasts and curious\npeople world wide. Everyone on Earth is invited to learn about lunar\nscience and explo ration\, take part in celestial observations\, and\nhonor cultural and per sonal connections to the Moon.\n\nOn Saturday evening\, come to the Crow O bservatory for views of the\nMoon through the telescope. Share pizza and m oon pies and view some\nmeteorites.\n\nQuestions? Check out the Crow Obser vatory on Instagram\n[https://www.instagram.com/crowobservatory/]!\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19377 DTSTART;TZID=America/Chicago:20251014T100000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251014T110000 SUMMARY:EEPS Dissertation Defense: Andrew Flaim CLASS:PUBLIC DESCRIPTION:The final examination of\n\nAndrew Flaim\nfor the degree of\nDo ctor of Philosophy in Earth\, Environmental\, and Planetary Sciences\nWash ington University in St. Louis\n\n\"HYDROCLIMATE VARIABILITY AND CHANGE IN PALEOCLIMATE PROXIES AND\nCLIMATE MODELS THROUGH THE LAST MILLENNIUM AND INTO THE FUTURE\"\nTuesday October 14 at 10:00 AM in Rudolph Hall Room 301 \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19376 DTSTART;TZID=America/Chicago:20250929T170000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250929T183000 SUMMARY:EEPS Undergraduate Meeting CLASS:PUBLIC DESCRIPTION:Agenda:\n\n4960 Field Geology Destination Reveal\n\nGeoclub Inf ormation Session\n\nSeminar: How to apply and get into graduate school \n \nPizza will be provided for dinner. Click here to RSVP\n[https://docs.goo gle.com/forms/d/e/1FAIpQLSdxlUq75aNotIFVMuO-iPiXefODODsdokHKLpqnyvKlEezfnA /viewform?usp=header]. \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19374 DTSTART;TZID=America/Chicago:20251121T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251121T130000 SUMMARY:Brown Bag: Yuqi Liu CLASS:PUBLIC DESCRIPTION:Yuqi will present _Constraints on the Composition of Mariana Ar c Crust\nand Upper Mantle from VP/VS Ratios._\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19373 DTSTART;TZID=America/Chicago:20251107T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251107T130000 SUMMARY:Brown Bag: Stephanie Zhang / Abby Santis CLASS:PUBLIC DESCRIPTION:Stephanie will present_ Investigating Mantle Sources of Lunar Sample\n73002\,6016\,7._\n\nAbby will present _Explorations of ~40 kyr bio marker records from\nLoktak Lake India: Insights to Indian summer monsoon dynamics._\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19372 DTSTART;TZID=America/Chicago:20251010T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251010T130000 SUMMARY:Brown Bag: Zhihua Xiong CLASS:PUBLIC DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19371 DTSTART;TZID=America/Chicago:20250926T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250926T130000 SUMMARY:Brown Bag: Xuanyu Liu / Megan Broussard CLASS:PUBLIC DESCRIPTION:Xuanyu Liu will present _Leaching Experiments Revealing Potenti al\nComposition of the Bright Veins on Bennu_\n\nMegan Broussard will pres ent_ CI Chondrite Oued Chebeika 002: A\nPrimordial Proxy Linking Bennu And Ryugu_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19368 DTSTART;TZID=America/Chicago:20251031T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251031T130000 SUMMARY:Brown Bag: Paige Havener / Hugh Chou CLASS:PUBLIC DESCRIPTION:Paige Havener will present_ Examining past rainfall and ecosyst em\nchanges in Central America: Biomarker explorations from Laguna\nLachu á\, Guatemala_\n\nHugh Chou will present _RIP Windows 10... or is it STIL L ALIVE!?!?_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19367 DTSTART;TZID=America/Chicago:20251114T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251114T130000 SUMMARY:Brown Bag: Michael O'Grady - Seiler Geospatial CLASS:PUBLIC DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19366 DTSTART;TZID=America/Chicago:20251017T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251017T130000 SUMMARY:Brown Bag: Bavan Rajan / Lauren Wratchford CLASS:PUBLIC DESCRIPTION:Bavan will present _Impact of Anions on REE Accumulation in Wea thering\nZones._\n\nLauren will present _Field Study of an Archean Suture Zone as an\nAnalogue for the Venus Highlands._\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19365 DTSTART;TZID=America/Chicago:20251003T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251003T130000 SUMMARY:Brown Bag: Skandalaris Center CLASS:PUBLIC DESCRIPTION:The Skandalaris Center will return for a learning session focus ed on\nhow to make your ideas grow and what resources are available to hel p\nyou.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19364 DTSTART;TZID=America/Chicago:20250919T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250919T130000 SUMMARY:Brown Bag: Alex Meyer / Skandalaris Center CLASS:PUBLIC DESCRIPTION:Alex Meyer will present _Diameter Analysis of Pele's Hair Produ ced by\nFragmentation vs Volcanic Lightning_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19361 DTSTART;TZID=America/Chicago:20250923T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250923T203000 SUMMARY:Equinox Party: Astronomy on Tap CLASS:PUBLIC DESCRIPTION: [Flyer for Astronomy on Tap's September 2025 event] \n \n\nSp ace science\, trivia\, and beer! Join Astronomy on Tap - St. Louis at\nUrb an Chestnut in the Grove.\n\nAssociate Professor of Physics Mikhail Tikhon ov\n[https://physics.washu.edu/people/mikhail-tikhonov] will be presenting \n\"How to Spot an Alien.\"\n\nMcDonnell Center Postdoctoral Fellow Zifan Lin\n[https://mcss.washu.edu/people/zifan-lin] will be presenting \"What ’s\nInside Planets.\"\n\nAstronomy on Tap STL [https://www.facebook.com/ AstronomyOnTapSTL]\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19360 DTSTART;TZID=America/Chicago:20250912T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250912T130000 SUMMARY:Brown Bag: Eric Hiatt CLASS:PUBLIC DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19359 DTSTART;TZID=America/Chicago:20251030T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251030T123000 SUMMARY:EEPS Colloquium: Kiya Riverman CLASS:PUBLIC DESCRIPTION: A CLOSE LOOK AT THE THWAITES GLACIER GROUNDING LINE: TIDAL FL EXURE\,\nSUBGLACIAL SEAWATER INTRUSIONS\, AND IMPLICATIONS FOR ICE-SHEET\n STABILITY\n\nGlaciers have an Achilles heel: at the location where ice goe s afloat\non the ocean\, small changes in the force balance can have an ou tsized\neffect on overall ice sheet stability. In particular\, models have \nshown that if thin films of seawater are able to penetrate beneath\nothe rwise grounded ice\, glacier retreat is dramatically accelerated.\n\nHere\ , I will present a suite of geophysical and oceanographic\nobservations co llected across the Thwaites Glacier\, West Antarctica\,\nthat illuminate h ow processes at the grounding line control preset-day\nretreat. Multiple l ines of evidence show seawater intrusions well\ninland of the grounding li ne\, and we’ll discuss how these\nobservations help explain why this par t of Thwaites is retreating\nrapidly despite limited ocean-forced melt. To better understand how\nwater gets beneath the glacier\, I’ll show resul ts from an elastic\nbeam bending model that suggests that tidal pumping ma y be the cause.\nWe’ll conclude by thinking about the role that physical models in\nthe lab may play in better parameterizing subglacial seawater pumping\nprocesses for large-scale ice sheet models trying to predict futu re\nsea level rise from West Antarctica.\n\n_EEPS Colloquia are made possi ble by the William C. Ferguson Fund_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19358 DTSTART;TZID=America/Chicago:20250911T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250911T123000 SUMMARY:EEPS Colloquium: Jonathan Aurnou CLASS:PUBLIC DESCRIPTION:ENERGETICALLY EXPENSIVE DYNAMO ACTION IN EARTH’S BASAL MAGMA OCEAN\n\nPrevious studies\, focusing on the electrical conductivity and t hermal\nevolution of an early magma ocean at the base of Earth’s mantle\ ,\nhave found that basal magma ocean (BMO) convection could have produced\ nthe ancient geomagnetic field. By advances in high-resolution dynamo\nmod eling\, we find that convection in a thin BMO-like spherical shell\nis abl e to sustain strong\, axially-aligned dipolar magnetic fields.\nHowever\, integrating our dynamo results with updated thermal evolution\nand rotatin g convective turbulence models implies that an Earth-like\nmagnetic field was unlikely to have been generated in the BMO\, a\nfinding relevant to th e interpretation of ancient paleomagnetic\nsignatures\, Earth’s global-s cale dynamics\, and long-term planetary\nevolution.\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19348 DTSTART;TZID=America/Chicago:20251015T120000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251015T133000 SUMMARY:EEPS Dissertation Defense: Emily Millman CLASS:PUBLIC DESCRIPTION:The final examination of\n\nEmily Millman\nfor the degree of\nD octor of Philosophy in Earth\, Environmental\, and Planetary Sciences\nWas hington University in St. Louis\n\n\"SELECTIVE BINDING OF AMINO ACIDS BY C LAY MINERALS AND ALTERED ROCKS\nIN PREBIOTIC SYSTEMS\"\"\nWednesday Octobe r 15 at 12:00 PM in Rudolph Hall Room 301\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19347 DTSTART;TZID=America/Chicago:20251023T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251023T123000 SUMMARY:Event Canceled - EEPS Colloquium: Morgan Cable CLASS:PUBLIC DESCRIPTION:This event has been canceled.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19346 DTSTART;TZID=America/Chicago:20251016T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251016T123000 SUMMARY:EEPS Colloquium: Stefano Nerozzi CLASS:PUBLIC DESCRIPTION:FROM ORBIT TO OUTCROP: UNVEILING MARS AND EARTH’S GEOLOGIC SE CRETS\nWITH REMOTE SENSING AND SURFACE TECHNIQUES\n\nIcy and volcanic terr ains host records of climate\, surface processes\,\nand geologic evolution of planetary bodies. Such records are encoded\nin the morphology\, intern al stratigraphy\, and composition of the\nsurface and subsurface\, and can be deciphered by integrating a diverse\nset of remote sensing techniques with in-situ and analog geophysical\nmeasurements. In this talk\, I will s how how the combination of orbital\nradar sounding\, visible and infrared imagery\, along with terrestrial\ngeophysical techniques can reveal the ge ologic and climate history of\na variety of Martian terrains\, including p olar ice caps\,\ndebris-covered glaciers\, and volcanic plains. Finally\, I will discuss\nhow emerging technologies can enable the next generation of radar\nsystems to explore a wide range of bodies across the solar syste m.\n\n_ EEPS Colloquia are made possible by the William C. Ferguson Fund_ \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19344 DTSTART;TZID=America/Chicago:20250925T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250925T123000 SUMMARY:EEPS Colloquium: Yang Liu CLASS:PUBLIC DESCRIPTION:UNVEILING LUNAR VOLCANIC GAS: A PEEK THROUGH SAMPLES\n\nYang Li u - Research Scientist\, NASA Jet Propulsion Laboratory\,\nCalifornia Inst itute of Technology\n\nVolatile-rich magma is present on the Moon as evide nced by the\npyroclastic deposits and by vesicular basalts. Despite these examples\,\nwe only started to recognize the presence of OH in the pre-eru ptive\nlunar magma about 15 years ago. In contrast\, sample-based observat ions\nof volcanic gas are mostly absent\, mainly due to the fact the volca nic\ngas involved in these eruptions had long gone. However\, vapor deposi ts\nleft by lunar volcanic gas can provide insights on the chemistry and\n species of lunar volcanic gas. Here\, I present our recent observations\na t nano- to micro-meter scale in lunar samples enabled by microbeam\ntechni ques.\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19343 DTSTART;TZID=America/Chicago:20250918T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250918T123000 SUMMARY:EEPS Colloquium: Professor William Holt CLASS:PUBLIC DESCRIPTION:LITHOSPHERE AND MANTLE DYNAMICS IN THE BASIN AND RANGE PROVINCE AND\nCOLORADO PLATEAU: LANDSCAPE EVOLUTION AND GRAND CANYON DEVELOPMENT\n \nThe Basin and Range Province and the Colorado Plateau provide an\nexcept ional setting to study how deep Earth processes shape\nlandscapes. The rel ative roles of crustal rebound\, mantle-driven\nuplift\, and lithospheric forces in driving Cenozoic extension and\ncanyon formation remain debated. We use numerical models that combine\nmantle flow\, lithospheric stresses \, plate boundary changes\, and\nsurface processes to reconstruct the regi on’s history since the late\nEocene. Our results show that high topograp hy supported by a thick\ncrustal root generated strong gravitational force s that drove\nlarge-scale crustal stretching and the rise of metamorphic c ore\ncomplexes as the crust collapsed. These forces\, together with the\ns hift from subduction to Pacific–North America plate motion\, explain\nth e observed directions and magnitudes of extension. Slab rollback and\nrela ted mantle flow mainly weakened the lithosphere by adding heat\,\nmelts\, and fluids. The models also reproduce drainage\nreorganizations—from nor theast-directed flow onto the Colorado\nPlateau\, to later southward and t hen southwestward flow—helping\nexplain the timing and pathways of Grand Canyon development. Together\,\nthese results highlight how mantle proces ses\, lithosphere dynamics\,\nand surface evolution combine to sculpt land scapes in southwestern\nNorth America.\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19341 DTSTART;TZID=America/Chicago:20251009T163000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251009T180000 SUMMARY:Environmental Studies Knight Distinguished Lecture CLASS:PUBLIC DESCRIPTION:WILL URBANIZATION SAVE OR DESTROY THE PLANET? WHAT DOES THE LAT EST\nSCIENCE TELL US?\n\nUrbanization is one of the biggest megatrends of the 21st century. It\nis transforming all aspects of society\, including t he economy\, how and\nwhere we live\, governance and institutions\, and cu lture and norms. By\nconcentrating people\, infrastructure\, and activitie s\, urbanization can\nhelp save resources and land for nature. However\, w e will also need\nsignificant resources to build and operate future cities . Some\nestimates suggest that if we built future cities like those in the \npast\, the embodied emissions to construct—not even power—those\ncit ies will exceed our remaining carbon budget to stay within 2° C.\nThe exp ansion of urban areas has also converted prime agricultural\nland and dest royed biodiversity corridors. Using biodiversity loss\,\nclimate change\, and food systems as entry points\, this talk will\ndiscuss the implication s of an urbanizing world for the sustainability\nof the planet.\n\n_RECEPT ION TO FOLLOW._\n\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19336 DTSTART;TZID=America/Chicago:20250919T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20250919T203000 SUMMARY:The Roman Space Telescope: The Roman View of Strong Lenses: the St. \nLouis Astronomical Society September meeting CLASS:PUBLIC DESCRIPTION:The Nancy Grace Roman Space Telescope was scheduled for launch in\nOctober 2026. 47% budget reductions to NASA’s science programs will\ ndelay\, if not permanently cancel\, the launch date – even though the\n Telescope’s construction has been completed. The Roman Space\nTelescope (RST) is an infra-red instrument with a field of view 100\ntimes larger th an the Hubble Space Telescope. It would make possible\nmajor advances in t he study of planets around other stars\, supernova\nexplosions\, the natur e of dark energy\, the structure of the universe\,\nand many other areas o n the frontiers of astronomy and cosmology. One\nof those areas involves d iscoveries using gravitational lensing. The\nlensing occurs when light\, a nd infra-red energy\, of a distant object\nis magnified by the strong grav ity of a closer object. That closer\nobject’s gravity distorts space\, a cting like the glass lens of a\nregular telescope.  Dr. Daylan explains t hat the RST “will play a\ntransformative role in strong lensing science with its planned\nwide-field surveys. The Roman is uniquely suited to char acterizing\ndark matter substructure from a robust population of strong\nl enses.”  He will present a simulation of detectable strong lenses\nin R oman's planned High Latitude Wide Area Survey to show how the RST\nwill wo rk\, if and when it is launched.\n\nDr Tansu Daylan joined the Washington University Physics Department\nfaculty as an assistant professor in Fall 2 023. His research program\nseeks to better understand the particle nature of dark matter and how\nexoplanets form\, evolve\, migrate\, and potential ly support life.\n\n_The St. Louis Astronomical Society is an organization for individuals\ninterested in astronomy and telescopes. The public is in vited to\nattend its meetings\, telescope observing sessions\, and special events.\nFor more information about Astronomical Society events\, please visit\n__www.slasonline.org_ [http://www.slasonline.org]_._\n\n_Free parki ng will be available._\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19335 DTSTART;TZID=America/Chicago:20251017T193000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251017T203000 SUMMARY:Venus: the St. Louis Astronomical Society October Meeting CLASS:PUBLIC DESCRIPTION:Venus is currently the brightest object\, excluding the Moon\, in\npredawn skies. It is twin to the Earth in size and interior\ncompositi on\, but radically different at its surface. The Greenhouse\nEffect has be en primarily responsible for a surface that bakes at\nalmost 900o F. under an atmosphere that produces 90 times the\nEarth’s pressure. Since NASA ’s Magellan spacecraft mission in the\n1990s\, scientists have had major questions about Venus’ geology\,\nincluding its volcanic characteristic s. With the recent discovery of\nactive volcanism on Venus\, understanding just where volcanoes are\nconcentrated on the planet\, how many there are \, and how big they are\nbecomes all the more important. Dr. Byrne and oth ers have used radar\nimagery from NASA’s Magellan mission to Venus to ca talog more than\n85\,000 volcanoes across Venus\, about 99% of which are l ess than 3\nmiles (5 km) in diameter.\n\nDr. Paul Byrne [/people/paul-byrn e] is an Associate Professor in the\nDepartment of Earth\, Environmental\, and Planetary Sciences at\nWashington University in St. Louis. He receive d his BA in geology and\nPhD in planetary geology from Trinity College D ublin\, Ireland.  Dr.\nByrne's research focuses on comparative planetary geology—comparing\nand contrasting the surfaces and interiors of planeta ry bodies\,\nincluding Earth. His research projects span the solar system from\nMercury to Pluto and\, increasingly\, to the study of extrasolar\npl anets. He uses remotely sensed data\, numerical and physical models\,\nand fieldwork in analog settings on Earth to understand why planets\nlook the way they do.\n\n_The St. Louis Astronomical Society is an organization fo r individuals\ninterested in astronomy and telescopes. The public is invit ed to\nattend its meetings\, telescope observing sessions\, and special ev ents.\nFor more information about Astronomical Society events\, please vis it\n__www.slasonline.org_ [http://www.slasonline.org]_._\n\n_Free parking will be available._\n\n \n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19329 DTSTART;TZID=America/Chicago:20251105T161500 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251105T171500 SUMMARY:2025 Robert M. Walker Distinguished Lectures Colloquium: The NASA\n Psyche Mission: Preparing for the Science of an Unknown Object CLASS:PUBLIC DESCRIPTION:The asteroid (16) Psyche may be the metal-rich remnant of a\ndi fferentiated planetesimal\, or it may be highly reduced\, metal-rich\naste roidal material that never differentiated. The NASA Psyche mission\naims t o determine Psyche’s provenance. How did we choose the science\ninstrume nts we’d need\, when there was not even a photo of the\nsurface\, and ho w are we preparing the team to interpret the data with\nan open mind? I’ ll describe the current state of knowledge about the\npossible solar syste m regions of origin for Psyche prior to its\nimplantation into the asteroi d belt\, the physical and chemical\nprocesses that can enrich metal in an asteroid\, and possible\nmeteoritic analogs. Then\, I’ll show the proces s our science team is\ngoing through to prepare us to produce the best pos sible science once\nthe spacecraft arrives at the asteroid.\n\nLindy Elkin s-Tanton is a planetary scientist\, and the Principal\nInvestigator of the NASA Psyche mission. She is Director of the\nUniversity of California\, B erkeley Space Sciences Laboratory.\nPreviously\, she was an Arizona State University VP and Regents\nProfessor in the School of Earth and Space Expl oration\, Director of\nthe Department of Terrestrial Magnetism at the Carn egie Institution\nfor Science\, and faculty at MIT. Elkins-Tanton's resear ch concerns the\nformation and evolution of rocky planets\; volcanic activ ity and\nextinctions on Earth\; as well as on effective teams and future-f acing\neducational practices. Asteroid (8252) Elkins-Tanton is named for h er\,\nas is the mineral elkinstantonite. She is a member of the National\n Academy of Sciences\, and the American Academy of Arts & Sciences.\nElkins -Tanton received her BS\, MS\, and PhD from MIT.\n\n_Header image: Launch of the Psyche spacecraft from Kennedy Space\nCenter\, October 13\, 2023. C redit: NASA/JPL/ASU_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19330 DTSTART;TZID=America/Chicago:20251106T190000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251106T200000 SUMMARY:2025 Robert M. Walker Distinguished Lectures Public Lecture: The NA SA\nPsyche Mission: First Visit to an Unknown World CLASS:PUBLIC DESCRIPTION:The NASA Psyche mission\, in flight in space as you read this\, is on\nits way to visit an immensely ancient object in our asteroid belt: A\nmetal body\, the first humans will ever have visited. When our solar\n system was just an infant\, thousands of planetesimals (tiny\nplanet-like objects) formed in fewer than one million years. That's\nthe same as sayin g\, if the 4\,567\,000\,000 years that our solar system\nhas existed was i nstead a 24-hour day\, the planetesimals formed in the\nfirst 18 seconds. Many planetesimals melted\, allowing metal cores to\nform inside rocky man tles. One of these metal cores may still exist\,\nrevealed in the asteroid (16) Psyche. I'll discuss what is known and\nwhat is hypothesized about t he asteroid\, how we have planned a mission\nand built a spacecraft to stu dy this unknown object\, how we progressed\nas a team through intense chal lenges\, and an update of where we are\njust over two years post-launch.\n \nLindy Elkins-Tanton is a planetary scientist\, and the Principal\nInvest igator of the NASA Psyche mission. She is Director of the\nUniversity of C alifornia\, Berkeley Space Sciences Laboratory.\nPreviously\, she was an A rizona State University VP and Regents\nProfessor in the School of Earth a nd Space Exploration\, Director of\nthe Department of Terrestrial Magnetis m at the Carnegie Institution\nfor Science\, and faculty at MIT. Elkins-Ta nton's research concerns the\nformation and evolution of rocky planets\; v olcanic activity and\nextinctions on Earth\; as well as on effective teams and future-facing\neducational practices. Asteroid (8252) Elkins-Tanton i s named for her\,\nas is the mineral elkinstantonite. She is a member of t he National\nAcademy of Sciences\, and the American Academy of Arts & Scie nces.\nElkins-Tanton received her BS\, MS\, and PhD from MIT.\n\n_Header i mage: Artists' impression of Psyche spacecraft. Credit:\nNASA/JPL/ASU_\n DTSTAMP:20260905T052257Z END:VEVENT BEGIN:VEVENT UID:19321 DTSTART;TZID=America/Chicago:20251002T113000 SEQUENCE:0 TRANSP:TRANSPARENT DTEND;TZID=America/Chicago:20251002T123000 SUMMARY:EEPS Colloquium: Jonathan Lunine CLASS:PUBLIC DESCRIPTION:MY LIST OF THE FIVE MOST IMPORTANT THINGS WE’VE LEARNED FROM THE\nJUNO MISSION\n\nThe Juno spacecraft has been orbiting Jupiter since J uly 2016 and is\ncompleting its first extended mission.  My personal list of the five\nmost important things we’ve learned from the Juno mission during its\nprime and extended missions goes something like this: 1. Jupit er has a\nfuzzy core. 2. Moist convection really is a dominant feature of Jovian\natmospheric dynamics 3. Water seems to be supersolar in abundance\ , at\nleast down hundreds of bars pressure.  4. Europa has a\nplatypus-sh aped crustal melt region. 5. There is an active lava flow\nat Zal Montes o n Io.\n DTSTAMP:20260905T052257Z END:VEVENT END:VCALENDAR