Ann Finkbeiner @annfinkbeiner.bsky.social Freelance science writer, mostly astro, some natsec sci, some women-in-astro, some grief psych, otherwise whatever I can get paid to write about. I love Baltimore, I do.
Bill Kristol @billkristolbulwark.bsky.social Editor at large, The Bulwark.
Director, Defending Democracy Together.
Host, Conversations with Bill Kristol.
Never Trump.
Pete Buttigieg @petebuttigieg.bsky.social Husband, dad, veteran, writer, and proud Midwesterner. 19th US Secretary of Transportation and former Mayor of South Bend.
PRIMA probe @prima-probe.bsky.social PRIMA is a far-IR probe concept for the 2030s that will reveal how abundant elements are built up in galaxies over cosmic time, and follow them as they become the molecular building blocks of new planets! https://prima.ipac.caltech.edu/
Alexandria Ocasio-Cortez @aoc.bsky.social Waitress turned Congresswoman for the Bronx and Queens. Grassroots elected, small-dollar supported. A better world is possible.
ocasiocortez.com
janiceleeastro @janiceleeastro.bsky.social โจ looking to our future with NASA's Habitable Worlds Observatory (SuperHubble!) & AI
โจ studying star formation and star clusters in nearby galaxies with PHANGS, Hubble, JWST
Jackie Barrientes @barrientes.bsky.social Social Media Specialist - Space Telescopes, Digital Audience Strategist, UNTx/AzSU alum, knitter, wine/bourbon drinker, Texas native, Baltimore ๐ฒ๐ฝ๐บ๐ธ
Unitedstatesofwine.blog
Danny Milisavljevic @danmil.bsky.social Associate Professor of Physics and Astronomy at Purdue University. Excitable Explorer of the Universe. Opinions are my own.
Amy Rae Hill @amyraehill.bsky.social Ceramic painter bringing dramatic galactic moments to your dinner table. PNW. (she/her)
linktr.ee/amyraehill
Restock: TBD
Sera Markoff @profsera.bsky.social Plumian Prof in Astro @U Cambridge & Prof Astro-/Particle Physics @U Amsterdam. All things black hole, member: Event Horizon Telescope, Africa Millimeter Telescope, CTAO. Space, sci-fi, cats, music, valve amps, other unabashed geekery. www.seramarkoff.com
Kevin M. Gill @kevinmgill.bsky.social Engineer, data wrangler, and martian photographer at NASA-JPL, Los Angeles. Curiosity Rover ECAM PUL. Saturn native, commutes to Jupiter. USMC vet. Opinions are mine https://apoapsys.com
Sophia Gad-Nasr @astropartigirl.bsky.social I do cosmology and astroparticle theory. I pick apart the Universe to figure out how it works. Science Advisor. Dark Matter hunter.
๐ต๐ฑโก๏ธ๐ช๐ฌโช๏ธ
Hank Green @hankgreen.bsky.social Long Time Internet Guy
Caroline Morley @astrocaroline.bsky.social Astronomer, Associate prof at UT Austin, mother of two small humans
Mark Marley @markmarley.bsky.social Personal account. Substellar science since the 80s.
Trent Dupuy @trentdupuy.bsky.social astronomer with no hobbies
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).
STARtorialist @startorialist.com โจ Space ๐ช Life โ๏ธ Style ๐ shop & blog co-founded by professional astronomers
๐๏ธ: shop.STARtorialist.com
Sierra Grant @sierragrant.bsky.social Carnegie Fellow at the Earth and Planets Laboratory. Protoplanetary + circumplanetary disks. Formerly at MPE, BU, and University of Michigan. She/her. #BiInSci ๐ณ๏ธโ๐โจ๐ญ Opinions are my own.
sierragrant.com
Erin Ryan @erinleeryan.bsky.social Doctor of space rocks turned professional curser at computers. Human of Freya the dog and of Modicello the garden ๐ฑ (USDA 7b). Does crochet ๐งถ in her off time, also cooks a lot ๐ฝ
Andy Rivkin @asrivkin.bsky.social Planetary Astronomer on #TeamAsteroid; Gedankenband member/guitarist; โSurprisingly nonchalantโ according to Wired. He/him ืื ื ื ๐ป
Work Output: https://scholar.google.com/citations?user=aGVsk3IAAAAJ
Play output: https://andyrivkin.bandcamp.com
John Wise @astroahura.bsky.social Astrophysics prof, CRA director, and proud alum of Georgia Tech. Fast cars and fast computers. ATLien and Southerner. Rotorhead and runner. Hapa.
Michael Wise @wisespace.bsky.social Astronomer, Director General, SRON Netherlands Institute for Space Research
(He/Him)
Emily Lakdawalla ๐ณ๏ธโโง๏ธ Uranus Expert @elakdawalla.bsky.social Planetary scientist, freelance science writer and space artist, queer, ADHD, mom. Turns out itโs hard to be all those things at once. Shop at elakdawalla.Etsy.com
Sean Carroll @seanmcarroll.bsky.social Physics, philosophy, complexity. @jhuartssciences.bsky.social & @sfiscience.bsky.social. Host, #MindscapePodcast. Married to @jenlucpiquant.bsky.social.
Latest books: The Biggest Ideas in the Universe.
https://preposterousuniverse.com/
Meg Schwamb @megschwamb.bsky.social Planetary scientist & astronomer at Queenโs University Belfast: KBOs, Planet Four(Mars), exoplanets (Planet Hunters NGTS) ,LSST SSSC co-chair. Opinions posted are my own. Pronouns: she/her
Pauline Barmby @pbarmby.bsky.social LLM-free science: https://orcid.org/0000-0003-2767-0090, fiction: https://www.galacticwords.com. Words in Yearโs Best Cdn F&SF, Utopia SF, Analog, OnSpec, MNRAS, ApJ, etc. Knitter, curler, sometime runner. ๐จ๐ฆ & minor planet 281067. She/her.
Stacey Alberts @dustobscured.bsky.social 
Scott Trager @sctrager.bsky.social Geek. Astronomer at Kapteyn Astronomical Institute, U Groningen, NL. Sort of but not quite Dutch. Lover of loud noisy music and good food. WEAVE Project Scientist and Deputy PI. Scientific Director of NOVA but I donโt speak for NOVA on here
Dr. Gerard van Belle @fringedoctor.bsky.social Active astronomer, intrepid interferometrist, doting dad, happy hubby, heuristic homebrewer, lapsed pilot, Director of Las Cumbres Obs in Santa Barbara. Asteroid 25155 van Belle.
Grumpy D Kelson @grumpykelson.myatproto.social You should have listened to me about galaxy growth and structure formation. But now, there are way more important things to worry about.
Peter Laursen @anisotropela.bsky.social Astrophysicist/#scicomm'er at the Cosmic Dawn Center (NBI/UCPH), admirer of galaxies, amateur boxer, and appreciator of comic books, indiepop, and white chocolate.
Til Birnstiel @birnstiel.bsky.social Professor for Astrophysics at LMU Munich. www.til-birnstiel.de
Yoni Brande @yonibrande.bsky.social phd astrologer, world class barista, and professional chef
John Debes @johndebes.bsky.social ESA/AURA astronomer at STScI. Opinions my own. I study exoplanets and disks around stars.
Sarah E Moran @offallingstars.bsky.social she/her.
(Exo)planetary clouds/hazes in ๐ฉ๐ฝโ๐ฌ,๐ป,๐ญ
Lover of all worlds, great and small. ๐๐ช
Assistant Professor of Astronomy at UMD.
๐บ๐งโ๐ฉฐ๐ฑ๐งโโ๏ธ๐โโ๏ธโ๐ธ๐ญ๐
All opinions just me.
Always screaming inside my heart.
https://tx.ag/moran
Brett Morris @brettmorr.is Astronomer, software engineer.
Supporting space telescopes, open science, and data access in astrophysics.
Thrilled and haunted by dots on stars.
http://brettmorr.is/
Posts my own, not my employer's.
Richard Alexander @richardalexander.bsky.social Astrophysicist at the University of Leicester | Dad | Cyclist | Exiled Scot
https://rdalexander.github.io
Yvette Cendes @whereisyvette.bsky.social Astronomer here! Iโm a Hungarian-American radio astronomer, alias /r/Andromeda321 on Reddit. Assistant professor at the University of Oregon 
The New York Times @nytimes.com We seek the truth and help people understand the world. Not a subscriber? Your first month is now free in our app. https://nytimes.onelink.me/Xpht/zbx4nci9
Brett McGuire @brettmcguire.bsky.social Asst Prof of Chemistry @MIT. Professional astrochemist, spectroscopist, radio astronomer. Amateur photographer, dungeon master, cook, jogger. He/him/his.
Dr Jan Eldridge @astro-jje.bsky.social NZ theoretical astrophysicist studying exploding binary stars. Sci-fi addict, feminist, non-binary femme. Pronouns: she/her/they. All views my own.
Dr Joanna Barstow @drjovian.bsky.social STFC Ernest Rutherford Fellow at the Open University. Astromum x 2. FRAS. Christian, singer, bookworm, musical theatre super fan.
Jessica Lu @jluastro.bsky.social Astrophysicist, Associate Professor @UCBerkeley. Interested in black holes, stars, galactic centers, astronomy instrumentation, adaptive optics.
Ethan Vishniac ๐บ๐ฆ๐จ๐ฆ๐บ๐ธ @ethan-vishniac.bsky.social Cantankerous astrophysicist and editor. Grandfather and dog owner. I could probably drink less coffee. I think about magnetized turbulence and what it means for the universe.
Orcid 0000-0002-2307-3857
Laura Kreidberg @lkreidberg.bsky.social Exoplanets, atmospheres, aliens. Director of the APEx Department at the Max Planck Institute for Astronomy.
Jamie R. Lomax @jrlomax.bsky.social Astrophysics, Skier, Hiker, Professor, Does Polarimetry for Food & Science, Opinions Are My Own & Do Not Reflect the DoD/DoN, Follows/Likes/RTs โ Endorsement
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
๐ณ๏ธโ๐ ๐ณ๏ธโโง๏ธ (she/her), โ
Website: https://emily.space
GitHub: https://github.com/emilyhunt- G Greg Herczeg @gregherczeg.bsky.social Welcome to the medium place.
Karen Masters @karenlmasters.bsky.social Prof. of Astronomy and Physics, Haverford College. PI of Galaxy Zoo. Radio astronomer. Check out my latest book โThe Astronomers Libraryโ about books, libraries and astronomy - three of my favourite things. Brit/US.
Jayne Birkby @jaynebirkby.bsky.social Professor of Astrophysics at the University of Oxford. I study the atmospheres of other worlds beyond the Solar system.
Emily Rice @emilylrice.me Astronomer at CUNY & AMNH, CEO of STARtorialist, HQ for Astronomy on Tap, I guess Iโm trying to make science fun?
My shop: shop.STARtorialist.com
Chris Mihos @chrismihos.bsky.social astronomer, frustrated sports fan, perpetually confused family man.
Marcel Haas ๐ฅ @harcel.bsky.social Associate prof of data science in population health @ Leiden University Medical Center. Former astrophysicist: extronomer! Beer sommelier. Pythonista. Aspiring Bayesian. Dad. Puzzle solver and Go/Baduk player.
Laura Lopez @ohdearz.bsky.social Professor of astronomy ๐ญ at Ohio State. Co-chair of @aascsma.bsky.social. Alum of UCSC and MIT. She/her ๐ฒ๐ฝ
Paul Woods @drpaulwoods.bsky.social Chief Editor of Nature Astronomy.
https://www.nature.com/natastron
Clara Sousa-Silva @drphosphine.bsky.social Still a mediocre quantum astrochemist, outstanding dinner party guest.
David W Hogg @hogg.bsky.social Astronomer, physicist, statistician, data analyst, open scientist. (Totally not at all the other David Hogg). I live on Lenape land.
Bruce Macintosh @bmacastro.bsky.social Astronomer working on imaging extrasolar planets, instrumentation, and science policy. Spare time: hiking with a golden retriever, and not playing enough boardgames.
Director, University of California Observatories, but opinions are my own. He/him
Gijs D Mulders @gijsmulders.com Exoplanet Astronomy
Assistant Professor
Santiago de Chile
http://gijs.cl
\m/
Dr. Scott W. Fleming @scottwfleming.bsky.social Branch Manager at Space Telescope Science Institute working in the MAST archive. Astronomy PhD. Studies stars and exoplanets. Loves programming. Opinions are my own. He/Him/His
Gail Zasowski @zastronomerski.bsky.social Astronomer ๐, professor at the U of Utah, mom of 2 littles. Exploring, hiking, camping, cooking, reading. Sci-fi and period romances. Definitely not writing social media bios.
Dr Ryan MacDonald @distantworlds.space Lecturer in Extrasolar Planets ๐ช ๐ญ at the University of St Andrews ๐ด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ
Kamber Schwarz @theschwarz.bsky.social Astrophysicist, Asst. Prof. @ University of Georgia starting Fall 2026, she/her, kamberschwarz.com
Views are my own
Dawn Gelino @dawngelino.bsky.social Manager for NASAโs Exoplanet Exploration Program, AAS VP, NHFP lead, Mom
Former Deputy Director NASA Exoplanet Science Institute
Peter Plavchan @plavchanpeter.bsky.social Associate Professor of Physics and Astronomy, George Mason University
Astrobites @astrobites.bsky.social Digestible summaries of the latest astronomy research. Written by an international team of grad students for undergrads! Supported by the @AAS_Office. #scicomm
Jonathan Fortney @jjfplanet.bsky.social UC Santa Cruz Astronomy Professor, Director of the Other Worlds Laboratory (OWL). Textbook Forthcoming: "Planetary Astrophysics: Exoplanets & Solar System." Father, Husband, Minnesotan, Runner. Proud product & employee of the public school system.
Jorge Moreno @jorgitomoreno.bsky.social Associate Professor. 4th Mexican scholar to earn tenure in astronomy/astrophysics in the United States. Exploring more research heavy opportunities. https://jorgemoreno.org
Alyssa Goodman @alyssagoodman.bsky.social Astronomy Professor at Harvard. Founder of glue solutions, inc. & http://path-to.org. Views are my own. 
Kari Byron @karibyron.bsky.social Mythbuster, CrashTest Girl, National STEM Festival, EXPLR
Jeff Foust @jfoust.bsky.social Senior Staff Writer, SpaceNews. Tips? Email jfoust@spacenews.com or contact on Signal: jfoust.58.
Lee Billings @leebillings.bsky.social CHNOPS in ferruginous saline. Multicellular aerobic chemoheterotroph; symbiont of photosynthetic autotrophs. Descendant of stardust; aspiring good ancestor. Senior Editor, Scientific American. Signal: @lee_billings.81
Stephen Colbert @stephencolbert.bsky.social Evieโs husband 
Gale Anne Hurd @galeannehurd.bsky.social Fighting disinformation/misinformation. Film/TV producer (The Walking Dead, The Terminator, Aliens, T2, Tremors, Armageddon) and documentaries (The YouTube Effect, Mankiller) & a bunch of stuff you've never heard of. Full-time Gooner. Part-time Cassandra.
Rebecca Watson @skepchick.org is this the one that wins
Jennifer L. Hoffman โจ๐ท @astroprofhoff.bsky.social Astronomer, professor, birder, singer, cat communer (she/her)
University of Denver, @chamberlin-obs.bsky.social
Past Grand Canyon Astronomer in Residence
Saavik โCareful of the Ankleโ Ford @saavikford.bsky.social CUNY Astro prof, AMNH research assoc, runner, astronomer, crafter, camper, gardener, mom, all opinions completely my own (she/her)
Brian Malow @sciencecomedian.bsky.social Science comedian, producer, speaker, human
Kelly Weinersmith @weinersmith.bsky.social Parasites, History of Medicine, Space Settlements, and Tech.
Co-host: Daniel and Kelly's Extraordinary Universe
Co-author: A City on Mars and Soonish.
President of the American Society of Parasitologists (opinions my own)
She/her
www.weinersmith.com
Scientific American @sciam.bsky.social A legacy of discovery. A future of innovation.
Zach Weinersmith @zachweinersmith.bsky.social New Book out this summer: Sawyer Lee and the Quest to Just Stay Home.
Other things of mine: Bea Wolf, A City on Mars, and SMBC
Website: www.smbc-comics.com
Patreon: https://www.patreon.com/ZachWeinersmith?ty=h
Chris Lintott @chrislintott.bsky.social Astronomer, writer and zookeeper. Oxford, Gresham and the Zooniverse. The human half of the Dog Stars podcast. New book: 'Our Accidental Universe' (UK/rest of world) and 'Accidental Astronomy (US) now out.
Julianne Dalcanton @dalcantonjd.bsky.social Astrophysicist at the Center for Computational Astrophysics & U. Washington. 
Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social Astronomer Royal for Scotland, Professor of Astrophysics, Edinburgh University. Author of How to Design a Universe. @astronomerroyal on insta (She/her)
Marc Postman @astromarc.bsky.social Astronomer studying galaxies, clusters, and dark matter. Envisioning the future of space astronomy. My posts are my own views. (he/him)
Dr. Heloise Stevance @sydonahi.bsky.social Astrophysicist - Schmidt A.I. in Science Fellow - Oxford Uni - she/they
Sky surveys
Exploding stars
Hungry black holes
AI Literacy
Beatrice Tinsley Lecturer 2021
Caroline Herschel Prize 2024
hfstevance.com
Shannon Stirone @shannonstirone.bsky.social Writer in nyc. Space nerd. Mars is a Hellhole. Bylines in NYTโs, The Atlantic, Wired, Esquire, Longreads, & others. Anti fascist. Opinions are mine. Climate by day.
signal: shannonstirone.78
https://natureofthings.substack.com/
shannonstirone.com
Prof. Emily Levesque ๐คโจ๐ญ๐ @emsque.bsky.social Astronomy professor, author of #TheLastStargazers, weird star enthusiast, human exclamation point.
Dr. Luisa Rebull @lrebull.bsky.social Astrophysicist and domestic goddess! Any opinions here are just mine and do not necessarily represent those of NASA or Caltech. 
Antonella Nota @antonellanota.bsky.social ISSI Executive Director, Astronomer, diversity advocate, dog lover, seeking answers to big questions, always wanting to learn something new
Bryan Gaensler @scibry.bsky.social Dean of Science at the University of California, Santa Cruz (UCSC). Astronomer, sci-fi connoisseur, rugby league devotee, puzzled parent ๐ฆ๐บ๐จ๐ฆ. Opinions โ UCSC.
Santa Cruz CA, USA. He/him. bryangaensler.net
anna !!! :) ๐ต๐ธ๐ธโจ๐ธ๐ต๐ธ @frogs4girls.bsky.social | she/her ๐ณ๏ธโ๐ | 26 | cutie pie | astrophysics grad student | virgo | jew for a free palestine | lifeโs more painless for the brainless! | pls be nice to me | https://linktr.ee/frogs4girls | pfp by foxpotato
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
Phil Plait @philplait.bsky.social Bad Astronomer (formerly @BadAstronomer), SciCommer, Dork. Crash Course Astronomy guy. He/him. Newsletter: badastronomy.beehiiv.com
I'm self-employed so my opinions do in fact represent my company's.
Dr. Timothy Pickering @tepickering.bsky.social astronomer, telescope wrangler, grizzled pythonista, bluesky boomer
Randall Munroe @xkcd.com