PLANETARY EXPLORATION NEWSLETTER Volume 19, Number 39 (September 28, 2025) PEN Website: https://planetarynews.org Editor: Alex Morgan Co-Editors: Mark V. Sykes, Matthew R Perry Email: pen_editor@psi.edu X: @pen2tweets Bluesky: @planetarynews.bsky.social o-------------------------TABLE OF CONTENTS---------------------------o 1. Royal Society Discussion Meeting: Unravelling the Magnetic Histories of Earth and Other Terrestrial Bodies 2. Postdoc in Polar and Planetary Microbiology at Cornell University 3. Tracing Rocky Exoplanet Compositions (TREC) Workshop 4. Professional Development Webinar: Careers in Planetary Science and Astrobiology 5. Earth Science Women's Network Upcoming Events 6. Planetary Meeting Calendar Additions 7. Planetary Science Journal - New Papers 8. Journal of Geophysical Research: Planets - New Papers o---------------------------------------------------------------------o 1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1-1 ROYAL SOCIETY DISCUSSION MEETING: UNRAVELLING THE MAGNETIC HISTORIES OF EARTH AND OTHER TERRESTRIAL BODIES We would like to announce the opportunity, in just under 12 months, for a discussion meeting funded by The Royal Society in London. 14-15 September, 2026 The Royal Society, Central London Registration will be free and, over two days, there will be 17 invited talks, a poster session (open to all), flash talks, and a great deal of stimulating discussion. Please be sure to put the dates in your diaries. The last such meeting on a similar theme was in 1999 and is fondly remembered by many, including some on the organising committee. Full details on registration and poster abstract submission will be sent round in due course. We hope to see a great many of you in London in a year's time! This meeting will assemble researchers working across vast length and time-scales to understand the multibillion year histories of dynamos operating in the cores of Earth, the Moon, Mars, Mercury and asteroids. It aims to provide a platform for recent advances in data, techniques and concepts to tackle major contemporary controversies whose implications stretch far beyond geo- and planetary magnetism. [Edited for length] 2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2 POSTDOC IN POLAR AND PLANETARY MICROBIOLOGY AT CORNELL UNIVERSITY We are seeking a Postdoctoral Fellow to join a field-going research program working in northwest Greenland in the Planetary Habitability & Technology lab group. The ideal candidate would have prior experience working with water sampling, laboratory processing of microbial and nutrient samples, as well as with metagenomic analyses. The ideal candidate would also have prior experience in polar ecosystems and a strong interest in coupling these data to oceanographic/environmental variables to better understand fjord and subglacial processes. The candidate should be able to participate in at least one field campaign. The Fellow will be joining a Astrobiology program-funded project and a vibrant interdisciplinary research group combining oceanography, glaciology, and planetary science with robotics. Desired start date is by January 1. The field campaign would take place from late February to April 2026. Applications will be reviewed on a rolling basis beginning October 1 until filled. Applicants should submit a cover letter, CV and list of three references to Dr. Britney Schmidt britneys@cornell.edu and brandi.revels@cornell.edu. Job description: https://academicjobsonline.org/ajo/jobs/30630 3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3-3 TRACING ROCKY EXOPLANET COMPOSITIONS (TREC) WORKSHOP We invite applications to the Tracing Rocky Exoplanet Compositions (TREC) workshop called "Under the Atmospheric Hood: How Geochemical Cycles Affect Exoplanet Biosignatures". This workshop will be held at Arizona State University in Tempe, AZ January 12-14 (after the AAS meeting in Phoenix). TREC is a project within the NExSS RCN devoted to detailing the connection between a planet's natural geological cycles and its atmospheric signature. This workshop will bring together astronomers and geochemists to map out potential geochemical cycles and their effects on biosignatures, across the diversity of rocky exoplanets. We seek participants across career stages, and across many fields: astronomy, planetary science, and geochemistry. Applications are now open and will close on October 15, 2025. We expect to offer ~40 people in person attendance, which will include stipends to offset attendance costs. We expect to notify selected in person applicants in late October; all others will be offered virtual attendance. To apply directly, please visit this link: https://forms.gle/FzxaTGF2k2LkSpba8 For more information, please visit the workshop's website: https://trec-nexss.org/workshop 4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4 PROFESSIONAL DEVELOPMENT WEBINAR: CAREERS IN PLANETARY SCIENCE AND ASTROBIOLOGY Friday, October 3 3pm ET / 2pm CT / 1pm MT / 12pm PT Join the LPI's Science Engagement team for a webinar exploring diverse career paths within planetary science and astrobiology. This multidisciplinary session will highlight career options across academia, government, nonprofit, and commercial sectors. Our panel of experts will discuss the differences in these career options, the varying expectations, and suggest ways to prepare for each. This session is especially designed for early-career scientists and professionals looking to navigate or transition within these multidisciplinary fields. Register at: https://www.zoomgov.com/webinar/register/WN_rqZvdhfnSouY_Bhkea2CZw 5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5 EARTH SCIENCE WOMEN'S NETWORK UPCOMING EVENTS We have several events coming up this season that may be of interest to you and/or your colleagues, students and friends, themed around Wellbeing and Careers Support. These are listed below, together with a web-link that contains more information about each event and how to register: October 2 2025, 1700 UTC: Support Gathering: https://eswnonline.org/support-gathering-october/ October 23 2025, 1600 UTC: Careers Beyond Academia - Engagement and Knowledge Exchange: https://tinyurl.com/5e8tc5ru November 25 2025, 1630 UTC: Diplomacy on a Global Stage: https://eswnonline.org/diplomacy-skills-november-2025/ Our events on October 23 2025 and November 25 2025 will be recorded for asynchronous participation and posted to our YouTube channel. We hope to e-see you at our events over the next few months. If you have any questions, please let us know. Best wishes, The Earth Science Women's Network Board and Associate Board of Directors 6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6 PLANETARY MEETING CALENDAR ADDITIONS Note: Many face-to-face meetings going forward will have online components. Check their websites for details. Posted at https://planetarynews.org/meetings.html January 12-14, 2026 Tracing Rocky Exoplanet Compositions (TREC) Workshop https://trec-nexss.org/workshop Tempe, AZ 7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7 PLANETARY SCIENCE JOURNAL - NEW PAPERS Direct Links to Open Access Papers Editor, Faith Vilas https://psj.aas.org Thermal Inertia Controls on Titan's Surface Temperature and Planetary Boundary Layer Structure Sooman Han and Juan M. Lora 2025 PSJ 6:222 https://doi.org/10.3847/PSJ/adfed1 On the Origin of Silicic Magmas on the Moon Srinidhi Ravi et al. 2025 PSJ 6:223 https://doi.org/10.3847/PSJ/adf7a4 The Ongoing Decline in Activity of Comet 103P/Hartley 2 Ariel Graykowski et al. 2025 PSJ 6:224 https://doi.org/10.3847/PSJ/ae018e 8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8 JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS - NEW PAPERS Direct Links to Open Access (OA) Papers Editors-in-Chief, Amanda Hendrix & Debra Buczkowski https://agupubs.onlinelibrary.wiley.com/journal/21699100 Rock Coatings as Evidence for Late Surface Alteration on the Floor of Jezero Crater, Mars Bradley J. Garczynski et al. https://doi.org/10.1029/2025JE009242 Hydrated Silica in Oxia Planum, Mars Joseph D. McNeil et al. https://doi.org/10.1029/2025JE008989 Re-Analysis of Pioneer Venus Data: Water, Iron Sulfate, and Sulfuric Acid are Major Components in Venus' Aerosols R. Mogul, M. Yu. Zolotov, M. J. Way, S. S. Limaye https://doi.org/10.1029/2024JE008582 The Boulder-Rich Blocky Unit of the Western Jezero Upper Fan: Discriminating Olivine and Pyroxene Compositions and Constraining Provenance Alicia F. Vaughan et al. https://doi.org/10.1029/2025JE009159 *********************************************************************** * The Planetary Exploration Newsletter is issued approximately weekly. * Current and back issues are available at https://planetarynews.org * * To subscribe, go to https://planetarynews.org and click on Subscribe. * * An unsubscribe option is available at the end of every PEN email. Or * send an email to pen_editor@psi.edu * * Please send all replies and submissions to pen_editor@psi.edu. * Announcements and other messages should be brief with links to URLs * for extended information, including detailed descriptions for job * announcements. Title plus text is limited to 200 words. All PEN * submissions will be tweeted @pen2tweets. 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