Prof. Emily Levesque 🤓✨🔭📚 @emsque.bsky.social Astronomy professor, author of #TheLastStargazers, weird star enthusiast, human exclamation point.
Kat Volk @katvolk.bsky.social Planetary scientist, equestrian, and cat herder. Cat posts at: https://bsky.app/profile/katskitties.bsky.social
China Space Watch @chinaspace.bsky.social China's space program has made remarkable strides in recent years, positioning itself as a major player in space exploration. Including Space Station Construction and Manned Missions. As well as Robotic Missions to The Moon's Far Side and Mars! 🚀🚩👨🏼🚀🌕🏳️🌈🏳️⚧️🕊️
Scott Kardel aka Palomar Skies @palomarskies.bsky.social Associate professor of astronomy at Palomar College, user of smart telescopes. 🔭 Blog: http://visiblesuns.blogspot.com/
Paul Byrne @theplanetaryguy.com Associate Professor of Earth, Environmental, and Planetary Science at WashU • NASA Planetary Data System Geosciences Node Director • Explorers Club EC50 • eeps.washu.edu/people/paul-byrne • he/him
John Forbes @redshiftless.bsky.social Astronomer in Aotearoa/New Zealand at the University of Canterbury.
Pusher of pixels, pens, arrays, and computer keys.
www.johncforbes.com
Pedro Bernardinelli @pbernardinelli.com Professor of astronomy @ University of São Paulo, PhD from Penn, formerly at UW. Discoverer of minor planets and C/2014 UN271, Brazilian, coffee dependent, geek. He/him/ele, pt-br/en
Sabina Raducan @raducan.bsky.social Planetary Scientist. Planetary defender. @ISSI @VUB
Harrison Agrusa @harrisonagrusa.bsky.social Asteroid 28888
Postdoc at Observatoire de la Côte d’Azur
Meghan Bartels @meghanbartels.bsky.social Science journalist (for hire!). Book person, cat person, Georgetown alumna, etc. In NYC. Signal: mbartels.07. she/her http://meghanbartels.github.io/portfolio/
Jonathan O'Callaghan @astrojonny.bsky.social Freelance space journalist. British Science Journalist of the Year 2024. Words in The New York Times, Scientific American, New Scientist, BBC, WIRED, + more.
Bangkok, Thailand
jdaoca@gmail.com
@astro_jonny on Twitter
https://www.jonathanocallaghan.com/
Dr. Teddy Kareta @teddykareta.bsky.social planetary astronomer by day, also by night
asst. prof. @ villanova, movie buff, he/they, 🏳️🌈
https://tkareta.github.io/, formerly lowell obs., uaz, umass
Sarah McAnulty, Ph.D. @sarahmackattack.bsky.social Squid biologist
Science communicator
Artist
Philadelphian
I run @SkypeAScientist.bsky.social
Creator of the SquidMobile
https://linktr.ee/Sarahmackattack
Deb Chachra @debcha.bsky.social Engineering professor. Author of HOW INFRASTRUCTURE WORKS (on Riverhead in the US+, on Torva in the UK+). Interested in embodiment, materiality, metacognition, and systems. All enthusiasm is 100% genuine. debcha.org
Abigail Fraeman @abbyfrae.bsky.social Planetary scientist. Deputy Project Scientist for Curiosity and (formerly) Opportunity Mars rovers. Muppet aficionado. Views and opinions my own. She/her.
Marina Koren @marinakoren.bsky.social Science journalist, covering space stuff. Bylines in National Geographic, The New York Times, and elsewhere. Former staff writer and union boss at The Atlantic.
www.marinakoren.com / Signal: @marinakoren.08
Saavik ‘Careful of the Ankle’ Ford @saavikford.bsky.social CUNY Astro prof, AMNH research assoc, runner, astronomer, crafter, camper, gardener, mom, all opinions completely my own (she/her)- S SpacePolicyOnline @spacepolicyonline.bsky.social SpacePolicyOnline.com is your first stop for news, information and analysis about civil, commercial, and national security space programs. Marcia Smith is the editor.
Rogue NASA @roguenasa.altgov.info Not an official NASA account. Come for the facts, stay for the snark.🥄
Same team from Twitter but with more gray hairs. 🚀🛰️🧪🔭
climate.nasa.gov
they/them
🏳️🌈🫶🏳️⚧️
Dr. Catherine Neish @planetneish.bsky.social Professor at The University of Western Ontario in planetary geology. Also a parent and OG X-Phile. I use she/her pronouns. https://planetneish.ca/
Doug Dawson @dddawson.bsky.social Still here.
Kate Marvel @drkatemarvel.bsky.social Climate scientist, formerly NASA, currently Project Drawdown. Former astrophysicist, current Earth supremacist. Author of HUMAN NATURE, best book of 2025 according to both Scientific American and my dad https://shorturl.at/aJRYb
The Open Notebook @theopennotebook.bsky.social Nonprofit equipping journalists to cover science: articles, tip sheets, trainings, courses, mentoring, pitch database, & more. Our new book THE BEST SCIENCE STORIES AND HOW THEY WORK: https://tinyurl.com/TBSSbook
James Davenport @jradavenport.com Astronomy professor in Seattle. Coffee drinking, year-round-plaid wearing, joke telling space dad. Searching for ET, caring for humans.
https://jradavenport.github.io
🔭☕️🎤
Meredith Rawls @merrdiff.bsky.social Astronomer at UW, data pipeline wrangler for Rubin Observatory, satellite mitigation leader via IAU CPS SatHub, mom, violist, Ballardite (Seattle), family cargo e-bike evangelist, Episcopalian, etc. Opinions all mine
Loren Grush @lorengrush.bsky.social Space reporter at @bloomberg.com covering NASA, commercial space, and the cosmos | Send tips: LGrush@bloomberg.net | Signal username: lorengrush.56 | Buy my book! https://www.simonandschuster.com/books/The-Six/Loren-Grush/9781982172817
Gene J. Mikulka @genejm1017.bsky.social Founded the Talking Space Podcast in 2009.
Immersed in spaceflight since the Apollo days, Space Advocate and lovebird Dad. All Opinions are mine alone and don't reflect the position of the podcast. https://www.talkingspaceonline.com
@aaccomazzi.bsky.social @aaccomazzi.bsky.social 
Alexandra Witze @alexwitze.bsky.social Science journalist and correspondent for Nature (she/her). Opinions = my own. Reach me at alexwitze.01 (Signal), witzescience (@gmail.com), or awitze (@protonmail.com).- J Jessie Dotson @jessiedotson.bsky.social
Dr. Jessie Christiansen @aussiastronomer.bsky.social Caltech/IPAC Planet Hunter | Chief Scientist, NASA Exoplanet Science Institute | @TEDFellow | Science consultant | SHERA PI | My views are not the views of NASA | She/her
Emily Hunt @emily.space Postdoc @univie.ac.at working on star clusters & machine learning.
Also: open web developer & enthusiast, working on @astrosky.eco and more
🏳️🌈 🏳️⚧️ (she/her), Ⓥ
Website: https://emily.space
GitHub: https://github.com/emilyhunt
Dr. Sarah Milkovich @milkysa.bsky.social Planetary Wanderer: public speaker, spacecraft engineer, scientist, artist, maker, mom. https://www.sarahmilkovich.com/
https://www.etsy.com/shop/windstoneandstars
Luke Dones @lukemeister.bsky.social The comet is coming.
Fan of SA Spurs and Toronto Blue Jays
Woke, but sleepy
> 67,800 years old
Really leaning into those raccoon protocols
Tomorrow may never come
For you and me, life is not promised
- Yasiin Bey, Umi Says
🎧 https://www.nts.live/
🪐🐈🦝🦔
Michele Bannister @astrokiwi.bsky.social Planetary astronomer @UCNZ: envisioning worlds from here and elsewhere, in a dark & glorious sky. Rutherford Discovery Fellow & Assoc. Professor. Asteroid (10463). Pākehā; she
Sarah Hörst @planetdr.bsky.social Professor of planetary science at Johns Hopkins. Titan’s biggest fan. Pomeranian wrangler. Runner. Love many, trust few, always paddle your own canoe. She/her. sarahhorst.com
Planetdr.26 on signal
Chris Schaller @hicommander.bsky.social Software Developer, Planetary Image Research Lab, Lunar and Planetary Lab, University of Arizona - MRO/HiRISE • TGO/CaSSIS • Europa Clipper/EIS - he/him/his.
Steve Crawford @astrocrawford.bsky.social Astronomer wandering through time and space.
Likely to post about #Earth and #Space science especially #astronomy, Open Source Software, Open Science, and space. And hiking with our dog. Opinions are my own.
He/him.
Emily Lakdawalla 🏳️⚧️ Uranus Expert @elakdawalla.bsky.social Planetary scientist, freelance science writer and space artist, queer, ADHD, mom. Turns out it’s hard to be all those things at once. Shop at elakdawalla.Etsy.com
Elizabeth Tasker @elizabethtasker.bsky.social UK astrophysicist and science communicator working at the Japan Aerospace Exploration Agency (JAXA). Author of 'The Planet Factory' and editor of ‘Planetary Diversity’. Very into space, virtual reality, computer graphics and rescue cats.
Kathleen Mandt, PhD @mommascientist.bsky.social Planetary scientist and Yorkie Mom. Exploring the solar system. Opinions are my own.
Mark Panning @markpanning.seismology.space Planetary seismologist in Pasadena. Project Scientist for InSight formerly operating on Mars and PI for Farside Seismic Suite and South Pole Seismic Station headed to the Moon. Somewhat nerdy. Opinions are, of course, my own. he/him
David Mimoun @moonnext.bsky.social Proud dad, Space Systems Prof U Toulouse- Mars Microphone @NasaPersevere Venus balloons #PlanetaryScience & SoCal addict. IHEDN 75e PolDef . Reserve Cit. AAE
Keith Smith @drkeithsmith.bsky.social PhD, occasional astronomer, talking head, science geek, cynic. Senior Editor at @Science.org, responsible for research papers in astronomy and planetary science. Views own, duh. Bio: https://www.science.org/content/author/keith-t-smith
Leigh Fletcher @leighfletcher.bsky.social Planetary scientist, Dad-in-training, space enthusiast, Professor based at the University of Leicester
https://linktr.ee/leigh.fletcher
https://orcid.org/0000-0001-5834-9588
Michael Battalio @battalio.com Research Scientist studying planetary climates
Peter Grindrod @petergrindrod.bsky.social Research Leader in Meteoritics & Planetary Science @NHM_London. Occasional cricket bat maker. he/him
Dr Lori-Ann Foley @lafoley.bsky.social PhD from Open University School of Planetary Sciences researching Mars's climate, focusing on Lyot Crater, after my Physics BSc. Previously did 3 degrees in Roman archaeology, one in languages and a law degree. Multinational upbringing. 🇯🇪🇨🇦🇩🇪
a rock or something @rockorsmth.bsky.social Planetary geologist (looking for full-time postdoc work) and part-time air ambulance pilot. Views are not my employers'. She/her.
Matthias M. M. Meier @matthiasmmmeier.com Meteorites, Museums, Mars, Mountains and many more things. Meteoriticist, Noble Gaser, Space Nerd, Family Man. Director of Naturmuseum St. Gallen, Switzerland. Posts in English and German. Private account.
🇨🇭🇸🇪🇲🇫🇪🇺🇺🇦 orcid.org/0000-0002-7179-4173
Tod Lauer @todlauer.bsky.social Extragalactic astronomer (black holes, galaxies, galaxy clusters, stellar pops) who also dabbles in planetary astronomy. Really, basically a pixel pusher.
Denis Sergeev @meteodenny.bsky.social Lecturer in Astrophysics at the University of Bristol. I use numerical models to study planetary climates. Views are my own. He/him.
https://dennissergeev.github.io
ORCiD: 0000-0001-8832-5288
Kaveh Pahlevan @kavehp.bsky.social Scientist. “We’re here to help each other get through this thing, whatever it is” -KV
Br. Robert Macke SJ @brbobmackesj.bsky.social Planetary Scientist/Maker/Meteorite Curator at Vatican Observatory
DISCLAIMER: Opinions expressed here are my own and do not necessarily represent the Vatican Observatory, the Jesuits, the Vatican, or the Catholic Church.
Ramana Sankar @rsankar.bsky.social Researcher at UC Berkeley Space Sciences Lab. Planetary scientist trying to figure out rain and snow on other planets. Hiking and road trip enthusiast. Bakes at 1am to destress.
Dr. Sean Peters @siprocks.bsky.social Visiting Assistant Professor @ Middlebury College | PRESSURE | Volcanologist 🌋| Planetary geologist 🌍 | Former ALT 🇯🇵| Writer ✍🏾 | Traveler 🧳 | Wannabe Lego enthusiast 🧱
sipeters.com
Meg Schwamb @megschwamb.bsky.social Planetary scientist & astronomer at Queen’s University Belfast: KBOs, Planet Four(Mars), exoplanets (Planet Hunters NGTS) ,LSST SSSC co-chair. Opinions posted are my own. Pronouns: she/her
Alejandro Soto @soto.space Planetary scientist and aerospace engineer. He/him. https://www.alejandrosoto.net
My writing represents me alone and not my employer nor anyone else.
Eryn Cangi, PhD @planetaryemc2.bsky.social planetary atmospheric scientist studying Mars, Venus, + @ CU Boulder. From PDX 💚 cats, plants, dnd, climate, outdoor stuff, Star Trek 🖖, bothering geologists about rocks, NPs geek
Dr Space Junk (Alice Gorman) @drspacejunk.bsky.social Space archaeologist | Global Expert Group for Sustainable Lunar Activity | Asteroid 551014 Gorman | Dr Space Junk vs the Universe. https://mitpress.mit.edu/9780262539654/dr-space-junk-vs-the-universe/ | Blog https://zoharesque.blogspot.com/
Victor Oyiboka @astrovictor.bsky.social Planetary Scientist & Astronomer. Physics PhD student at the University of Texas at Dallas. Interested in the study of Exoplanet Detection and Characterization
Kat Dapré @katdapre.bsky.social Icy seismologist at ANU with a special place in my heart for Enceladus | she/her
Jon Kay @jonpkay.bsky.social baseball nut, GIS, AI, sci-fi, running, fatherhood
Jason Perry @volcanopele.bsky.social Avid volcanic moon enjoyer, makes space images look nice
Libby Jackson @libbyjackson.com Head of Space, Science Museum.
Hossam Aly @astrohoss.bsky.social Astrophysics postdoc, currently at TU Delft🇳🇱. Planet Formation, Accretion Discs (especially misaligned and warped ones), Dust Evolution, Computational Astrophysics. Formerly Leicester🇬🇧, Milan🇮🇹, Lyon🇫🇷, and Heidelberg🇩🇪. Originally from 🇪🇬
Dr. Nick Attree @nickattree.eurosky.social Planetary scientist @iaacsic.bsky.social, working on @esa.int Rosetta & @cometinterceptor.bsky.social (Nucleus WG chair). Prev @TU-Braunschweig.de, @LAM, @QMUL, @physicsuol.bsky.social 🇬🇧🇪🇸🇪🇺
https://sites.google.com/view/nickattree
ORCID: 0000-0003-3344-6693
Larry R. Nittler 🚀🎹🌖☄️ @larrynittler.bsky.social Hermeochemist, Interstellar Dust Buster, and Cosmic Organist.
Professor @SESEASU
asteroid 5992
Opinions are my own.
pronouns: he/him/his
Rich Leveille @richleveille.bsky.social Earth and planetary scientist, explorer and educator. Non-traditional academic. Former Mars rover scientist. Skier. Guitarist.
Montreal, Canada.
Alex Innanen @transmartian.bsky.social knitter, gardener, planetary postdoc at York University
Head in the (martian) clouds
they/them 🏳️⚧️🏳️🌈
acinnanen.ca/
Ed Rivera-Valentín @planettreky.bsky.social Planetary Scientist & Trekker of Planets.
#LatinxInSTEM 🇵🇷 #LGBTQinSTEM 🏳️🌈.
My posts, my views.
Dr. Raphael Marschall @spacemarschall.net Associate Professor of Experimental Physics at the @unibe.ch
Co-I of ESA's Comet Interceptor, collaborator on NASA's Lucy and ESA's Rosetta missions.
www.spaceMarschall.net
(he/him)🇨🇭🇺🇸🇫🇷
#asteroids #comets #protoplanetarydisks #planetaryScience 🧪🔭🚀🛰️☄️
Anne Verbiscer @verbiscer.bsky.social Deputy Project Scientist on NASA's New Horizons mission. Participating Scientist on NASA's Lucy Mission. Minor Planet 9726.
dr. nick wagner (he/him) @geophyswags.bsky.social planetary geophysicist and geodesist | postdoc at Brown University | i make fake numbers match real numbers for a living
Beth Johnson @planetarypan.bsky.social Planetary scientist, podcast host, cat wrangler. Communication specialist for the SETI Institute. planetarypan.medium.com #WomeninSTEM
Lucy Lim @lucylim.bsky.social Space rocks are my jam
Cynthia Phillips, PhD @planetcynthia.bsky.social Planetary geologist at NASA JPL. Europa is my favorite place in the solar system! Author of Astrophysics for Dummies https://www.amazon.com/Astrophysics-Dummies-Cynthia-Phillips/dp/1394235046/ and other books. Tweets are my own. She/her 🏳️🌈
Alessondra Springmann, PhD @sondy.com Cat herding, hiking, sewing, planetary science. Currently: Boulder, CO. formerly Tucson, AZ; Arecibo, PR; and a few other places. Asteroid radarist & healthcare advocate. she/they http://sonoranspace.org
Still masking!
Steve Desch @deschscoveries.bsky.social Professor of astrophysics / planetary science / meteoritics at Arizona State University.
Rachel Klima @pyroxena.bsky.social Planetary scientist, dark music lover, probably need some hobbies again some day. Mercury, Moon and Minerals ❤️❤️Opinions are my own and do not represent my employer.
Carolyn Porco @carolynporco.bsky.social Voyager & Cassini! AAS Carl Sagan Medal 2010. Asteroid Porco 7231. Inaugural NatGeo Eliza Scidmore Award. Living my best life.
If you like what you see here, signup for my newsletter on Substack!
https://carolynporco.substack.com/
Joe Renaud @spacetides.bsky.social NASA Ast. Research Scientist | U. Maryland | Studying tides on moons and #Exoplanets 🪐| Favorites: #SG1, 🍕,🍷,🍺,🏃♂️,🌶️ | He/him | Married to Jessica Teaford | Opinions my own
Dan Berman @bermandc.bsky.social Planetary Scientist. Husband and father. Progressive. Sci-fi lover. Board gamer. I speak for the trees. 
Hannah Sargeant @drhannahsarge.bsky.social Planetary Scientist/Space Resources/Space Nuclear Power. STEM outreach & education, ultimate frisbee & track and field. Army spouse.
https://hsargeant0.wixsite.com/drhannahsargeant
Insta: @Dr_Hannah_Sargeant
Meenakshi Wadhwa @minwadhwa.bsky.social Director, Scripps Inst. Oceanography & Vice Chancellor, UC San Diego. Opinions are my own.
Mark Gurwell @markgurwell.bsky.social Full Endorser. Here for new music mostly, plus planets 'n moons, astronomy, beer. Find me moar places here https://linktr.ee/markgurwell
@gregastro.bsky.social @gregastro.bsky.social NASA geek, husband, dad of two amazing daughters, 🐈 dad, amateur astronomer, family historian, musician, feminist, huge 🏳️🌈 ally
@intrplnetsarah.bsky.social @intrplnetsarah.bsky.social Lunar geologist/artist. My posts are my own and may or may not reflect the opinions of my employer. #space #science #sciart
LDMay @ldmay.bsky.social Purveyor of space widgets and perpetual Martian.
Former hockey mom. Mostly on Threads.
Michael Person @mjperson.bsky.social MIT Planetary Astronomy and other stuff.
J.L. Galache @jlgalache.bsky.social Open Science, Space Resources, Asteroids, Entrepreneurship, Cycling, Pasta...
Mallory Kinczyk, PhD @stargirl32.bsky.social Planetary Geologist | She/her | Stargirl wondering what this is all about... 💫
Dr. Dan / The Spectral Band @thespectralband.bsky.social Lunar Geologist
Drummer for A Troop of Echoes and Public Policy
Noisy bangers as D. Majestic and the Spectral Band
Dr. John P. Ortiz @johnportiz14.bsky.social Interested in Titan impacts, methane on Mars, Ocean Worlds, and fractures everywhere
Staff Scientist @ Los Alamos National Laboratory |
Hydrogeology | Planetary science | Fractures | Multiphase Flow & Transport |
Site: https://johnportiz14.github.io/
MaggieBeth @maggiebeth.space Former NASA postbac • still studying exoplanet atmospheres • UMaine Geology ‘24 • Gwen Stefani (the cat) fan account • my views ≠ NASA
📍Maine 🌲
maggiebeth.space
Steve Elardo @steve-elardo.com Professor at UF Geology. Florida Planets Lab PI and Moon-guy. Planetary Scientist, Magma-Maker, Dad, Miami Dolphins and Star Wars Fan. Scotch, Tiki, Titanic, LEGO, and Red Panda enthusiast. My views.
#FinsUp!
#PlanetaryScience
planets.geology.ufl.edu
@caricorrigan.bsky.social @caricorrigan.bsky.social 
Dr. Angela Stickle @schmemela.bsky.social Rocket ship enthusiast, pizza connoisseur, I like to study holes in the ground, avid lover of all things pumpkin (except PSL) and Christmas trees
Andrew Steffl @steffl.bsky.social Planetary scientist, husband, dad, walker of dogs, cook, asteroid (6814)… he/him
Neeraja Chinchalkar @neerajac.bsky.social 🌌🔭
Western University grad 🇨🇦
Auburn University grad
🌕🚀. Planetary Geologist💫🪐🌎. Zircons. Impact Craters☄️🌠 #womaninSTEM