PLANETARY EXPLORATION NEWSLETTER Volume 19, Number 35 (August 31, 2025) PEN Website: https://planetarynews.org Editor: Matthew R Perry Co-Editors: Alex Morgan, Mark V. Sykes Email: pen_editor@psi.edu X: @pen2tweets Bluesky: @planetarynews.bsky.social o-------------------------TABLE OF CONTENTS---------------------------o 1. Join the Save NASA Science Day of Action in Washington, D.C. on October 5-6, 2025 2. LPSC 2026: Save the Date 3. ESA Postdoctoral Research Fellowships in Space Science 4. New Horizons Science Spotlight Webinar 5. MarsSI User Meeting at EPSC-DPS 2025 6. EPSC-DPS Women in Planetary Science Discussion Hour - Thursday, September 10, 2025 7. Announcing the Launch of SolarSystem.video 8. [NASA] PDS: Mars Reconnaissance Orbiter Data Release 74 9. [NASA] PDS: KPLO ShadowCam 10. [NASA] PDS: Psyche GRS and NS Release 2 11. [NASA] PDS: Aperiodic PDS Data Releases in 2025.08 12. Planetary Meeting Calendar Additions 13. Planetary Science Journal - New Papers 14. 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 JOIN THE SAVE NASA SCIENCE DAY OF ACTION IN WASHINGTON, D.C. ON OCTOBER 5-6, 2025 A historic coalition of 16 space organizations - representing professional societies, workforce associations, and advocacy groups - are leading a Day of Action to Save NASA Science to push back against the draconian cuts proposed to NASA science in the FY 2026 White House budget request for NASA. The primary goals of the event are to: - Preserve funding for NASA's Science Mission Directorate and the National Science Foundation - Ensure that active science missions are not prematurely cancelled - Advocate for sustained investments in space science research, education, and outreach Research has shown that in-person constituent meetings are the most effective way to engage elected officials on topics like space exploration. No past advocacy experience required to participate. All with a U.S. address are welcome. Find more information and register at: https://www.planetary.org/advocacy/day-of-action Questions? Send a message to advocacy@planetary.org 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 LPSC 2026: SAVE THE DATE The 57th Lunar and Planetary Science Conference (LPSC) will be held at The Woodlands Waterway Marriott Hotel and Convention Center in The Woodlands, Texas, and virtually on March 16-20, 2026. LPSC is a defining event in planetary research, bringing together a diverse group of international experts in a truly collaborative environment. For 57 years, LPSC has been convening the lunar and planetary science community to showcase the latest science, research, and discoveries in the field. To learn more, visit: https://www.hou.usra.edu/meetings/lpsc2026/. Indication of Interest Submit an indication of interest to receive additional information about the conference at: https://www.hou.usra.edu/meeting_portal/iofi/?mtg=lpsc2026 LPSC Reflections Discover more about LPSC's history and importance to planetary research at: https://www.hou.usra.edu/meetings/lpsc2026/#LPSC-reflections 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 ESA POSTDOCTORAL RESEARCH FELLOWSHIPS IN SPACE SCIENCE We are pleased to announce the 2025 Call for Applications for the European Space Agency's Research Fellowships in Space Science. We expect to hire 5 to 6 postdoctoral fellows who will start their fellowship in Fall 2026. The deadline for applications is 22 September 2025. ESA's postdoctoral Research Fellowship programme offers early-career researchers the possibility to carry out independent research in a variety of disciplines. Research Fellowships in Space Science offer the opportunity to contribute to ESA's endeavour to explore our Solar System and the Universe in the fields of heliophysics, planetary science, astrophysics, and fundamental physics. ESA Research Fellow contracts have a maximum duration of three years. Projects initially last two years and are frequently extended to a third year upon submission of a dedicated proposal. Research Fellowships in Space Science can be located at any of the following institutes: - European Space Astronomy Centre (ESAC) in Villafranca del Castillo near Madrid, Spain - European Space Research and Technology Centre (ESTEC) in Noordwijk, the Netherlands - ESA Office at Space Telescope Science Institute (STScI) in Baltimore, Maryland, USA For more information, please visit: https://www.cosmos.esa.int/fellowship 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 NEW HORIZONS SCIENCE SPOTLIGHT WEBINAR Join us on 25 September 2025, 2:30-3pm EDT New Horizons continues its operation, now at 61au from the Sun. Since 2015 it has made ground-breaking discoveries of the Pluto-Charon system, flown past the small contact KBO binary Arrokoth and collected phase and light curve data for some three-dozen additional KBOs and the ice giants. It has also been sampling dust density throughout the Solar System and studying the cosmic optical background. To raise awareness of New Horizon's scientific impact we are beginning a new spotlight seminar series (30 min, fourth week each month) which we invite you to attend online, or watch recorded at your convenience. Our speaker will be Erick Powell of Boston University and he will be speaking on: "Termination Shock Particle Streaming Upstream at New Horizons" Connection Link: https://tinyurl.com/52722tcm Meeting ID: 973 1769 7636 Passcode: Arrokoth Calendar for future seminars: https://tinyurl.com/22jnnkm2 - October 23, Ralph McNutt, Pluto's Environment: The Combined Solar-Wind and Solar-Energetic-Particles Distribution Function as Observed by New Horizons - November 20, Oliver White, Pluto Global Map Recordings are archived and posted at: https://tinyurl.com/yu38rv8e For questions, contact New Horizons Co-I Susan Benecchi, susank@psi.edu 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 MARSSI USER MEETING AT EPSC-DPS 2025 MARS Systeme d'Information (MarsSI), a platform for on-demand processing of planetary orbital data, will hold a splinter meeting at EPSC-DPS 2025. The agenda includes presentation of the platform, live demonstration, and a tutorial on how to use the output products in QGIS. The session is planned Wednesday September 10 at 11:00 (EEST). Details are below: https://meetingorganizer.copernicus.org/EPSC-DPS2025/session/55313 For more information on MarsSI, please visit: https://marssi.univ-lyon1.fr/ MarsSI is one of the tools of Planetary Surface Portal (PSUP): https://psup.cnrs.fr/en/ 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 EPSC-DPS WOMEN IN PLANETARY SCIENCE DISCUSSION HOUR - THURSDAY, SEPTEMBER 10, 2025 Please join us for the annual Women in Planetary Science (WiPS) discussion hour over lunchtime at this year's joint EPSC-DPS meeting in Helsinki, Finland! This year, we're diving into the topic of building more international collaborations and funding opportunities across different countries. We will have an engaging discussion featuring planetary scientists with diverse international experiences. Come with your thoughts, questions, and an appetite for networking! Thanks to generous sponsorship from the DPS Committee, sandwiches will be provided for the first 100 registrants. We look forward to a stimulating and collaborative discussion! Registration and more info: https://bit.ly/WiPS_2025 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 ANNOUNCING THE LAUNCH OF SOLARSYSTEM.VIDEO The Planetary Research Cooperative is pleased to announce the launch of its community video server that is devoted exclusively to planetary science content - SolarSystem.video: https://solarsystem.video The server uses the federated open-source software Peertube, and the platform is not monetized and shows no ads. We are currently hosting channels for Europlanet, Geo.X, ISSI, ISSI-Beijing, Lightcurve films, and OpenPlanetary, with more to come. Nearly 700 videos are already available, including several popular online seminar series. For information on how to create an account or upload content, sign up to be a member at: https://coop.planetary-research.org 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 [NASA] PDS: MARS RECONNAISSANCE ORBITER DATA RELEASE 74 The NASA Planetary Data System announces Release 74 of data from the Mars Reconnaissance Orbiter (MRO). This release contains raw, calibrated, and derived data products nominally covering the time period November 9, 2024, through February 8, 2025. Some instrument teams are delivering more recent data. The data are archived at various PDS nodes. CRISM, SHARAD, and Radio Science data at the Geosciences Node. HiRISE, CTX, and MARCI data at the Cartography and Imaging Sciences Node. MCS data at the Atmospheres Node. SPICE data at the NAIF Node For a view centered on this release: https://pds.nasa.gov/datasearch/subscription-service/SS-20250829.shtml The data may also be accessed at: https://pds-geosciences.wustl.edu/missions/mro/ To access the latest PDS Data Releases, please visit the following link: https://pds.nasa.gov/datasearch/subscription-service/SS-Release.shtml All available PDS data may be found at: https://pds.nasa.gov/datasearch/data-search/ For further information, see the PDS Home Page: https://pds.nasa.gov/ MRO data releases occur every three months. The next release is scheduled for December 1, 2025. 9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9-9 [NASA] PDS: KPLO SHADOWCAM The NASA Planetary Data System's Cartography and Imaging Sciences Node (IMG) announces the release of the ShadowCam Data Archive. ShadowCam is a NASA-funded instrument hosted onboard the Korea Aerospace Research Institute (KARI) Korea Pathfinder Lunar Orbiter (KPLO) satellite. By collecting high-resolution images of the Moon's permanently shadowed regions (PSRs), ShadowCam will provide critical information about the distribution and accessibility of water ice and other volatiles at spatial scales (1.7 m/pixel) required to mitigate risks and maximize the results of future exploration activities. The archives include all the data collected by the instrument during the KPLO mission with new data released quarterly. Calibrated, map-projected versions of all images are available in Cloud Optimized GeoTIFF (COG) format, which can be used directly in most GIS software packages and converted to USGS ISIS format using GDAL. PDS-format versions of raw and calibrated unprojected image data are also available. Project Website: https://shadowcam.im-ldi.com/ Archive DOI: https://www.doi.org/10.17189/y89z-kt98 10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10 [NASA] PDS: PSYCHE GRS AND NS RELEASE 2 This release of Psyche Mission data includes the following data, with data coverage 2025-04-01 through 2025-06-30. Cruise data will continue to be released quarterly. - Gamma Ray Spectrometer (GRS) raw cruise data - Neutron Spectrometer (NS) raw cruise data These data are available at: https://pds.nasa.gov/datasearch/subscription-service/SS-20250825.shtml Or more directly at: https://arcnav.psi.edu/urn:nasa:pds:psyche.grs https://arcnav.psi.edu/urn:nasa:pds:psyche.ns To access all data archived in PDS: https://pds.nasa.gov/ 11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11 [NASA] PDS: Aperiodic PDS Data Releases in 2025.08 In August 2025, PDS ingested and made available the following data, none of which were regularly released with an ongoing mission: - 2025.08.28 Shape Models and Assessment Products Dione - 2025.08.28 Shape Models and Assessment Products Mimas - 2025.08.28 Shape Models and Assessment Products Rhea - 2025.08.28 Shape Models and Assessment Products Tethys - 2025.08.22 MSL ChemCam Passive Surface Spectra - 2025.08.14 Pioneer 11 Trajectory - 2025.08.14 Pioneer 11 Trapped Radiation Detector - 2025.08.11 Pioneer 11 Quadraspherical Plasma Analyzer (PA) - 2025.08.14 Pioneer 10 Trajectory - 2025.08.06 Pioneer 10 Charged Particle Instrument - 2025.08.05 Pioneer 10 Quadraspherical Plasma Analyzer (PA) To access those data: https://pds.nasa.gov/datasearch/subscription-service/SS-20250831.shtml To access all data archived in PDS: https://pds.nasa.gov 12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12 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 No new meetings posted. 13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13 PLANETARY SCIENCE JOURNAL - NEW PAPERS Direct Links to Open Access Papers Editor, Faith Vilas https://psj.aas.org Crater Retention Timescales of Brain Coral Terrain Record Past Climatic Change on Mars Alexander M. Morgan et al. 2025 PSJ 6:200 https://doi.org/10.3847/PSJ/adf1aa Asteroid Companions in the Visible: WFPC 2 Images A. D. Storrs and F. Vilas 2025 PSJ 6:201 https://doi.org/10.3847/PSJ/adef30 Simulating the (99942) Apophis Earth Flyby Using a Contact Binary Model Hai-Shuo Wang et al. 2025 PSJ 6:202 https://doi.org/10.3847/PSJ/adf73f X-Ray-induced Photochemistry of Hydrocarbons: Implications for the Formation of Organic Haze in (Exo)Planetary Atmospheres Salma Bejaoui et al. 2025 PSJ 6:203 https://doi.org/10.3847/PSJ/adf4d3 Spectral Trends across the Rings and Inner Moons of Uranus and Neptune from JWST NIRCam Images M. M. Hedman et al. 2025 PSJ 6:204 https://doi.org/10.3847/PSJ/adf325 Atomic-scale Insights into the Effects of Diffusion on the Binding of Adsorbed Sodium on the Surfaces of the Moon and Mercury Anastasis Georgiou et al. 2025 PSJ 6:205 https://doi.org/10.3847/PSJ/adf188 A Novel Metric for Assessing Climatological Surface Habitability Hannah L. Woodward et al. 2025 PSJ 6:206 https://doi.org/10.3847/PSJ/adf3ab 14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14 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 Scales of Martian Crustal Magnetization Constrained by MAVEN, InSight, and Zhurong O. M. Romeo, M. Manga, R. J. Lillis, A. Mittelholz https://doi.org/10.1029/2025JE008986 New Geophysical Constraints for Intrusive Magmatism at Large Martian Volcanoes: Implications for Crustal Thickness and Volatile Outgassing N. L. Wagner & P. B. James https://doi.org/10.1029/2025JE008959 Lobate Forms Around Craters on the Moon and Mercury: Origin From Landslides, Ejecta Flows and Modification Stage Collapse A. J. Blance et al. https://doi.org/10.1029/2025JE008980 Enceladus Water Plume Modeling Using DSMC A. Mahieux et al. https://doi.org/10.1029/2025JE009008 Investigations of the Sinus Aestuum DMD: An Anomalously Large and Compositionally Distinct Lunar Pyroclastic Deposit Cosmo T. Sikes, Jessica M. Sunshine, Megan E. Newcombe https://doi.org/10.1029/2024JE008919 On the Crustal Architecture of the Terrestrial Planets A. Broquet, J. Maia, M. A. Wieczorek https://doi.org/10.1029/2025JE009139 Investigation of the Thermal Conductivity of Dry and Icy Lunar Regolith Simulants Henning Wache, Luca Kiewiet, Paul Zabel, Jurgen Blum https://doi.org/10.1029/2025JE009084 *********************************************************************** * 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. 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