PLANETARY EXPLORATION NEWSLETTER Volume 15, Number 40 (September 26, 2021) PEN Website: https://planetarynews.org Editor: Georgiana Kramer Co-Editors: Mark V. Sykes, Alex Morgan Email: pen_editor@psi.edu Twitter: @pen2tweets o-------------------------TABLE OF CONTENTS---------------------------o 1. [NASA] Proposed New Language on Inclusion, Diversity, Equity and Accessibility for AOs 2. LPI Seeking IDEA Advisory Committee Members 3. [NASA] PDS: JUNO Data Release 16 4. [NASA] PDS: OSIRIS-REx OCAMS and TAGCAMS Bennu Release 10 5. [NASA] PDS: MRO CRISM MTRDR and TER Release 18 6. NASA Ames Legacy Mars Global Climate Model (GCM) Tutorial 7. MEPAG VM13 2nd Information Circular 8. November's Annual VEXAG Meeting Will Be Virtual 9. 2022 GRS on the Origins of Life: Challenging Paradigms in Prebiotic Chemistry 10. ASP2021: The Meeting of the Astronomical Society of the Pacific 11. DPS Student Townhall 12. DPS Student and Early Career Reception and Grad School Pavilion 13. Women in Planetary Science Discussion Hour 14. HiRISE Digital Terrain Models for Funded MDAP Awards at No Charge 15. Opportunities for Students in AGU Planetary Sciences Section 16. Lowell Observatory Prize Postdoctoral Fellowship Program 17. Submissions Solicited for New Research Topic in Physics and Frontiers in Astronomy and Space Sciences 18. JPL Open Position: Scientist, Lunar Seismologist 19. Planetary Geoscience Faculty Position at the University of Iowa 20. Tenure Track Faculty Opening at Boston University 21. Open Rank Faculty Position in Planetary Geochemistry at UCLA 22. Planetary Meeting Calendar Additions 23. Planetary Science Journal - 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 [NASA] PROPOSED NEW LANGUAGE ON INCLUSION, DIVERSITY, EQUITY AND ACCESSIBILITY FOR AOS Inclusion is a NASA core value. The Science Mission Directorate (SMD) is committed to a culture of inclusion, diversity, equity, and accessibility (IDEA) where all employees feel welcome, valued, respected, and engaged. NASA expects that IDEA will be reflected in the composition of all Announcement of Opportunity (AO) proposal teams. NASA announced a Request for Information (RFI) via NSPIRES that seeks comments/responses from the public on the draft language that NASA intends to add to SMD's Standard AO Template, all future stand-alone SMD AOs, and the SALMON-3 AO. The full text of SMD's IDEA RFI, proposed new AO language, and response instructions can be found at: https://go.nasa.gov/3xSsOP1 RFI responses must be submitted via NSPIRES by November 3. Please send questions by October 22, 11:59 EDT to: Dr. Michael H. New (michael.h.new@nasa.gov) and/or Dr. Cindy L. Daniels (cindy.l.daniels@nasa.gov) Responses may be on an individual basis or in a Q&A at: https://go.nasa.gov/3xSsOP1 Do not send RFI responses to these email addresses; they will not be considered. Please read the RFI before emailing: https://go.nasa.gov/3xSsOP1 [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 LPI SEEKING IDEA ADVISORY COMMITTEE MEMBERS The Lunar and Planetary Institute (LPI) is seeking committee members for its newly-established IDEA (Inclusion, Diversity, Equity, and Accessibility) Independent Advisory Committee. The goal of the advisory committee is to provide guidance on LPI's practices, in particular for meetings, conferences, and public and planetary community engagement activities. Service on the committee will be supported through an honorarium. To apply, please submit a cover letter (up to two pages) and brief CV (up to two pages) highlighting your experience and interest in supporting IDEA practices to Cynthia Svambera (csvambera@usra.edu), the USRA HR business partner at LPI, by Friday, October 8. For more information, please see our full posting here: https://www.lpi.usra.edu/features/092121/idea/ 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 [NASA] PDS: JUNO DATA RELEASE 16 The Planetary Data System announces the 16th release of data from the JUNO mission. The release includes EDR and RDR level data acquired between 2020-11-09 and 2021-02-21, which covers Juno Orbits 31 and 32. Data sets from the following experiments are now available: - FGM (magnetometer) - Gravity - JADE (plasma) - JEDI (energetic particle detector) - JIRAM (infrared auroral mapper) - JunoCam (camera) - MWR (microwave radiometer) - SPICE - UVS (ultraviolet imaging spectrometer) - Waves (radio and plasma wave science) To access the above data, please visit the following link: https://pds.nasa.gov/datasearch/subscription-service/SS-20210920.shtml JUNO data are archived at the PDS Atmospheres (ATM), Imaging (IMG), NAIF, and Planetary Plasma Interactions (PPI) Nodes. The data can be accessed from these nodes' web sites and from the main PDS home page: https://pds.nasa.gov The PDS Team pds_operator@jpl.nasa.gov 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 [NASA] PDS: OSIRIS-REX OCAMS AND TAGCAMS BENNU RELEASE 10 This release of OSIRIS-REx data includes the following data, through May 10, 2021 (end of Bennu encounter). - OCAMS raw and calibrated - TAGCAMS raw - (other instruments for encounter 10 coming soon) These data are available at: https://pds.nasa.gov/datasearch/subscription-service/SS-20210923.shtml or more directly at: https://arcnav.psi.edu/urn:nasa:pds:orex.ocams and https://arcnav.psi.edu/urn:nasa:pds:orex.tagcams To access all data archived in PDS: https://pds.nasa.gov/ The PDS Team pds_operator@jpl.nasa.gov 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 [NASA] PDS: MRO CRISM MTRDR AND TER RELEASE 18 PDS announces Release 17 of Mars Reconnaissance Orbiter CRISM Targeted Empirical Data Record (TER) and Map-projected Targeted Reduced Data Record (MTRDR) products, at: https://pds-geosciences.wustl.edu/missions/mro/crism.htm This release fills in data from August 9, 2008, through April 26, 2009. TER products are image cubes derived from CRISM hyperspectral targeted observations, post-processed to standardize the illumination and observation geometry and remove atmospheric gas absorptions and instrument artifacts. MTRDRs are the same products map-projected using terrain models of the Martian surface. To access all PDS Data Releases, please visit: 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/ The PDS Team pds_operator@jpl.nasa.gov 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 NASA AMES LEGACY MARS GLOBAL CLIMATE MODEL (GCM) TUTORIAL The Mars Climate Modeling Center at NASA Ames Research Center will host a virtual modeling tutorial November 2-4, 2021. The tutorial aims to teach new users how to use and analyze output from the NASA Ames Legacy Mars Global Climate Model (GCM). The tutorial will include lectures and hands-on sessions with the goal of teaching participants about the basic physics in the model, its subroutines and flow diagrams, how to make changes to the code, how to compile and run the model, and how to analyze model output. Students, teachers, and researchers with a range of numerical modeling experience are encouraged to participate, but some coding proficiency with FORTRAN and Python is strongly encouraged. For more information and to RSVP for the tutorial, please visit: https://tinyurl.com/zszauws5 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 MEPAG VM13 2ND INFORMATION CIRCULAR Members of the Mars community, I cordially invite you to participate in the next virtual meeting (VM13) of the Mars Exploration Program Analysis Group (MEPAG), scheduled on Monday, September 27th, 2021, from 1:00 - 5:00 p.m. EDT, 10:00 a.m. - 2:00 p.m. PDT. We are happy to announce that this meeting will include closed captioning. The agenda is below and includes: updates about recent MEPAG activities; Mars Exploration Program (MEP) Status, including an update on the Mars Ice Mapper study; a report from the MSR Science Planning Group 2 (MSPG2); updates from Perseverance, Curiosity and InSight and; a presentation from HEOMD. This meeting is open to all members of the Mars science community including our international colleagues, and I look forward to your participation. Sincerely, Dr. R. Aileen Yingst MEPAG Chair If you have a comment or question about the meeting, please email: mepagmeetingqs@jpl.nasa.gov. Additional meeting information, including the agenda, will be posted to: https://mepag.jpl.nasa.gov/meetings.cfm 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 NOVEMBER'S ANNUAL VEXAG MEETING WILL BE VIRTUAL Venus Exploration Analysis Group (VEXAG) annual meeting originally scheduled as a hybrid- virtual meeting on November 8-10, 2021 will now be conducted as two fully virtual half-day session on Monday-Tuesday, November 8-9, 2021. There will be a half-day session on Monday afternoon, November 8th, followed by a half-day. session, on the morning of Tuesday November 9th. A reminder that registration is required. Registration Deadline is November 9, 2021 Information on this meeting is available at: https://www.lpi.usra.edu/vexag/meetings/vexag-19/ 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 2022 GRS ON THE ORIGINS OF LIFE: CHALLENGING PARADIGMS IN PREBIOTIC CHEMISTRY The Gordon Research Seminar (GRS) is a unique forum for graduate students, post-docs, and other scientists with comparable levels of experience and education to present and exchange new data and cutting-edge ideas in both presentation and poster format. This year's theme aims to foster discussions that facilitate the development of novel strategies the field can use to investigate the origins of life and welcomes any abstracts related to improving our understanding of the geology, chemistry, and biological origins of the early Earth. Date and Location: GRS (early career): January 22-23 Oxnard, California GRC: January 23-28 same location. Abstract Deadlines: Oral Presentations: October 22, 2021 Poster Presentations: December 25, 2021. For more information and to apply visit: https://www.grc.org/origins-of-life-grs-conference/2022/ GRS/GRC COVID-19 policies: Proof of vaccination from all registered attendees and speakers prior to the conference will be required, except in cases where exemptions based on medical or religious grounds are determined to be appropriate by GRC's Executive Committee. Additional details will be shared upon completion of your registration. We look forward to receiving your application! 10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10 ASP2021: THE MEETING OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC Astronomy Teaching & Public Engagement: Sharing Best Practices Nov. 18-20, 2021 Astro 101 instructors, K-12 educators, scientists, science communicators, and public engagement professionals in astronomy, planetary science (and related fields) are invited to participate in this virtual meeting. There will be plenary talks, panels, oral and poster papers. Program strands for ASP2021 will include: Teaching Introductory Astronomy - What are We Doing Now? Engaging Astronomy Learners Using Smart Phones, Tablets, etc. Doing Public Engagement in Informal Settings Communicating Science Using Social & Traditional Media Advancing Diversity, Equity, Inclusion, Access & Social Justice Preserving Dark Skies & Addressing Climate/Environmental Science Getting Ready for Upcoming Eclipses - Lunar and Solar! For more information, registration, and abstract submission, see: https://tinyurl.com/22bm638j Abstract submissions are open now and are due by Oct. 6 11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11-11 DPS STUDENT TOWNHALL Date: Sunday, Oct. 3 Time: 6:00 pm Eastern, 5:00 Central, 4:00 Mountain, 3:00 Pacific Duration: 30 minutes Join the DPS Student Representative and other DPS students to discuss how DPS can best serve you! Do you have questions about DPS and the DPS committee? Do you want to know who the student rep is and what they do? Would you like to request more from DPS or better understand the resources available? Come ask your questions and meet other students in DPS! Sign up is required so that we can send you information/updates about the event. Please see more details and sign up: https://forms.gle/vnnPX5ANTVe6AsN1A For any questions, please contact Maya Yanez at mdyanez@usc.edu. You can attend this event without being registered for the main DPS meeting. 12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12-12 DPS STUDENT AND EARLY CAREER RECEPTION AND GRAD SCHOOL PAVILION Date: Sunday, Oct. 3 Time: 6:30 pm Eastern, 5:30 Central, 4:30 Mountain, 3:30 Pacific Duration: 30 minutes formal Reception followed by 1 hr Grad Pavilion (1.5 hrs total) Join us for a pre-conference networking and socializing where we will have the opportunity to meet people from our disciplines (and others!). We will have a general discussion of professional development topics and encourage students and early career scientists to take this opportunity to connect with others prior to the start of the conference! We also have grad school representatives from various institutions to network and ask questions of. Sign up is required so that we can send you information/updates about the event. Please see more details and sign up: https://forms.gle/JVWRRPPJfmckFuwMA For any questions, please contact Maya Yanez at mdyanez@usc.edu. You can attend this event without being registered for the main DPS meeting. 13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13 WOMEN IN PLANETARY SCIENCE DISCUSSION HOUR Date: Monday, Oct. 4 Time: 5:00 pm Eastern, 4:00 Central, 3:00 Mountain, 2:00 Pacific Duration: 1.5 hours (one-hour event, half-hour open networking time) Join us for the annual Women in Planetary Science event, titled: Lean in ... into discomfort: the continual work of equity and justice. This year, the theme for this discussion-focused event will be our continued commitment to equity and justice in STEM. A huge thanks(!) to our generous sponsor AURA for supporting this event. Please see more details and register at: https://bit.ly/DPS_WiPS_2021 For any questions contact Maggie McAdam (maggie.mcadam@nasa.gov), Audrey Martin (acm586@nau.edu), or Kelsi Singer (ksinger@boulder.swri.edu). You can attend this event without being registered for the main DPS meeting. 14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14-14 HIRISE DIGITAL TERRAIN MODELS FOR FUNDED MDAP AWARDS AT NO CHARGE To support the needs of the Mars science community, the USGS Astrogeology Science Center is providing HiRISE DTMs by request and at no charge for funded ROSES 2021 Mars Data Analysis Program proposals. Investigators are responsible for identification and selection of appropriate HiRISE stereopairs, and must coordinate with USGS personnel before proposal submission to obtain a Confirmation of Technical Specification Letter. DTMs will only be generated for funded proposals. Technical requirements can be found at the USGS Astrogeology Planetary Photogrammetry site: https://tinyurl.com/p4zvyur7 Additional details are available in section 4.3.7 of the NASA ROSES 2020. 15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15-15 OPPORTUNITIES FOR STUDENTS IN AGU PLANETARY SCIENCES SECTION The AGU Planetary Sciences section is seeking applicants for our student and early career representative positions. These are 2-year positions that begin in January, though all incoming reps are invited to our Fall Meeting meeting prior to their start. Responsibilities include attending leadership meetings, organizing student activities at the AGU Fall Meeting, and leading new section initiatives that focus on support for student and early career members. You can apply through this Google Form: https://forms.gle/9ePwqt4EJmRny9AM7 Applications are due by October 15. 16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16-16 LOWELL OBSERVATORY PRIZE POSTDOCTORAL FELLOWSHIP PROGRAM Applications are invited for the Lowell Observatory Prize Postdoctoral Fellowship Program. This is a new fellowship program that aims to support early-career scientists in astronomy, planetary science, and related fields to pursue independent research of their own choosing. These are four-year fellowships, subject to satisfactory performance. Current research at Lowell Observatory spans a wide range of disciplines from planetary science to extragalactic astronomy and instrumentation. Fellows have access to all Observatory resources, including the 4.3-m Lowell Discovery Telescope (LDT), the Naval Precision Optical Interferometer (NPOI), several 1-m class telescopes, the Astrophysical Materials Lab at Northern Arizona University, and our instrumentation and engineering facilities. There are also opportunities for fellows to develop their science communication skills as part of the observatory's education and public outreach mission. The Lowell Observatory Prize Postdoctoral Fellow receives an annual salary of $75,000, relocation reimbursement up to $5,000, and research funds of $20,000 annually to support their scientific program. Lowell Observatory is committed to diversity and inclusion in the workplace. The full announcement is available at: https://lowell.edu/about/career-opportunities/ Questions to Dr. Michael West, Deputy Director for Science, at mwest@lowell.edu 17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17 SUBMISSIONS SOLICITED FOR NEW RESEARCH TOPIC IN FRONTIERS A new Research Topic titled "Sources and Propagation of Ultra-Low Frequency Waves in Planetary Magnetospheres" is now open for submissions to the Space Physics sections of the journals Frontiers in Physics and Frontiers in Astronomy and Space Sciences. ULF waves are ubiquitous in plasma environments in our Solar System. This Research Topic will cover the broad spectrum of ULF wave physics, from sources to interaction with the surrounding particle populations. We hope that you will consider submitting a manuscript. This Research Topic examples: - Detailed case studies of all types of ULF waves, such as Kelvin-Helmholtz waves, mirror modes, foreshock waves, field-line resonances, at Earth and other planets. - Statistical studies of ULF waves and their relationship with upstream conditions. - Investigations of ULF wave transmission across different plasma regions, using multi-spacecraft data analysis and/or global simulations. - Investigations of the impact of ULF waves on the surrounding plasma and their contribution to radiation belt dynamics. - Comparative studies of ULF waves in different environments in our Solar System. In addition to original research, we also invite reviews and perspectives addressing these topics. For more information, please visit: https://tinyurl.com/4c2buupy 18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18-18 JPL OPEN POSITION: SCIENTIST, LUNAR SEISMOLOGIST The Jet Propulsion Laboratory in Pasadena, California, invites applications for a newly created research position in the Planetary Interiors and Geophysics Group. The research will involve lunar seismology, specifically working with existing lunar seismic data, and interpreting highly scattered signals. The researcher will refine science requirements and define basic data processing and archiving processes for the upcoming Farside Seismic Suite (FSS). They will also perform detailed computational modeling of highly scattered lunar seismic data and compare to existing Apollo seismic data in order to refine techniques for extracting observations to constrain the lunar interior. They will prepare for future mission opportunities by investigating both single-station and networked approaches to locating lunar seismicity and formulating the scientific requirements for future terrestrial planet missions that contain a seismologic element. Applicants should have a well-established record in lunar seismology. It is expected that the successful candidate will develop an independently funded research program. To view the full description and apply, please visit: https://www.jpl.jobs/job/R882/Scientist-Lunar-Seismologist-Planetary-Interiors-And-Geophysics-Group Applications received by October 24, 2021, will receive full consideration. [Edited for length] 19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19-19 PLANETARY GEOSCIENCE FACULTY POSITION AT THE UNIVERSITY OF IOWA The Department of Earth & Environmental Sciences at the University of Iowa invites applications for a full-time tenure-track position at the Assistant Professor level in the broad area of Planetary Geoscience, including geophysics, remote sensing, mineralogy, and geochemistry. Please see: https://jobs.uiowa.edu/faculty/view/74285 for more details on the position and application process. Questions regarding this position can be directed to Dr. David W. Peate (EES Chair: david-peate@uiowa.edu) or Dr. Jasper Halekas (Physics: jasper-halekas@uiowa). 20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20-20 TENURE TRACK FACULTY OPENING AT BOSTON UNIVERSITY The Department of Astronomy at Boston University seeks applications for a tenure track Assistant Professor position to begin on July 1, 2022. The successful candidate will be an early-career scientist who will lead a robust research program to become affiliated with the Center for Space Physics (CSP) and participate fully in the department's teaching missions at introductory, majors, and graduate levels. Minimum qualifications include a PhD in Astronomy, Physics, Engineering, or a related field, with postdoctoral experience expected. Applications will be considered from all areas of Space Physics in Earth, planetary, and heliospheric regions. Space Physics big data endeavors may benefit from the Boston University Rafik B. Hariri Institute for Computing and Computational Science and Engineering. In addition to this position, the Department expects to search for additional faculty members over the next five years. For further information and application instructions, please visit: https://academicjobsonline.org/ajo/jobs/19408 21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21-21 OPEN RANK FACULTY POSITION IN PLANETARY GEOCHEMISTRY AT UCLA The UCLA Department of Earth, Planetary, and Space Sciences invites applications for a tenure-track/tenured faculty position in Planetary Geochemistry at any rank. We encourage applicants from all sub-disciplines of planetary geochemistry to apply. Applications from individuals with expertise that complements existing strengths in geochemistry, cosmochemistry, meteoritics, and planetary science at UCLA will be especially welcome. We encourage those with experience in research, teaching, and community/collegial service that has prepared them to contribute to our commitment to excellence and equity, diversity, and inclusion to apply. Candidates are expected to hold a Ph.D. in planetary science, geochemistry, cosmochemistry, or a related field by July 1, 2022. To apply, candidates must submit (a) a cover letter, (b) CV, (c) statement of research, (d) statement of teaching, (e) statement of contributions to equity, diversity, and inclusion, (f) writing samples, and (g) the names of three to five individuals who can serve as references. Beginning September 22, 2021, applications will be accepted at: https://recruit.apo.ucla.edu/JPF06909 Reviews of submitted applications will commence on October 29, 2021 and continue until the position is filled. See full job posting at the link above for more details. 22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22-22 PLANETARY MEETING CALENDAR ADDITIONS Posted at https://planetarynews.org/meetings.html November 18-20, 2021 Meeting of the Astronomical Society of the Pacific https://tinyurl.com/22bm638j Online May 1-6, 2022 Exoplanets 4 https://aas.org/meetings/aastcs9/exoplanet Las Vegas, NV [Editor Note: If there is a planetary-related meeting, conference or workshop that you think your colleagues should be aware of, please send the date, title, URL and location to pen_editor@psi.edu.] 23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23-23 PLANETARY SCIENCE JOURNAL - NEW PAPERS Editor, Faith Vilas https://psj.aas.org Lunar Surface Composition Constraints from Maturity-corrected Far-ultraviolet Reflectance Maps Benjamin D. Byron et al. 2021 PSJ 2:189 https://doi.org/10.3847/PSJ/ac1d53 Investigating the Relationship between (3200) Phaethon and (155140) 2005 UD through Telescopic and Laboratory Studies Theodore Kareta et al. 2021 PSJ 2:190 https://doi.org/10.3847/PSJ/ac1bad FOSSIL. I. The Spin Rate Limit of Jupiter Trojans Chan-Kao Chang et al. 2021 PSJ 2:191 https://doi.org/10.3847/PSJ/ac13a4 Pluto and Charon Impact Crater Populations: Reconciling Different Results Stuart J. Robbins and Kelsi N. Singer 2021 PSJ 2:192 https://doi.org/10.3847/PSJ/ac0e94 Threat from Within: Excitation of Venus's Co-orbital Asteroids to Earth-crossing Orbits Petr Pokorn and Marc Kuchner 2021 PSJ 2:193 https://doi.org/10.3847/PSJ/ac1e9b New Constraints on Pluto's Sputnik Planitia Ice Sheet from a Coupled Reorientation-Climate Model Perianne E. Johnson et al. 2021 PSJ 2:194 https://doi.org/10.3847/PSJ/ac1d42 Tiger: Concept Study for a New Frontiers Enceladus Habitability Mission Elizabeth M. Spiers et al. 2021 PSJ 2:195 https://doi.org/10.3847/PSJ/ac19b7 A Model to Predict the Size of Regolith Clumps on Planetary Bodies Anand Patel and Christine Hartzell 2021 PSJ 2:196 https://doi.org/10.3847/PSJ/ac1a6e An Improved Method to Measure Head Echoes Using a Meteor Radar Peter A. Panka et al. 2021 PSJ 2:197 https://doi.org/10.3847/PSJ/ac22b2 Constraining Saturn's Interior with Ring Seismology: Effects of Differential Rotation and Stable Stratification Janosz W. Dewberry et al. 2021 PSJ 2:198 https://doi.org/10.3847/PSJ/ac0e2a Collision Chains among the Terrestrial Planets. II. An Asymmetry between Earth and Venus Alexandre Emsenhuber et al. 2021 PSJ 2:199 https://doi.org/10.3847/PSJ/ac19b1 Collision Chains among the Terrestrial Planets. III. Formation of the Moon Erik Asphaug et al. 2021 PSJ 2:200 https://doi.org/10.3847/PSJ/ac19b2 Multiple Moist Climate Equilibrium States on Arid Rocky M-dwarf Planets: A Last-saturation Tracer Analysis Feng Ding and Robin D. Wordsworth 2021 PSJ 2:201 https://doi.org/10.3847/PSJ/ac2236 Size and Shape of (11351) Leucus from Five Occultations Marc W. Buie et al. 2021 PSJ 2:202 https://doi.org/10.3847/PSJ/ac1f9b The Roles of Latent Heating and Dust in the Structure and Variability of the Northern Martian Polar Vortex E. R. Ball et al. 2021 PSJ 2:203 https://doi.org/10.3847/PSJ/ac1ba2 *********************************************************************** * 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/pen_subscribe.php, or * send a request to pen_editor@psi.edu * * To unsubscribe, 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. 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