Jason Hutt @jthutt.bsky.social NASA Human Spaceflight for 25+ years. Displaced Philadelphian. Go Birds! Amateur photographer. Occasional sci-fi writer.
Sent people to the Moon!
Go then. There are other worlds than these.
https://otherworlds.picfair.com/
Ezra Klein @ezrakleinbot.bsky.social Ezra Kleinβs tweets, articles, clips and podcasts on Bluesky.
Cato Institute @cato.org A public policy research organization dedicated to individual liberty, limited government, free markets, and peace. https://www.cato.org/
Walter Olson @walterolson.bsky.social Writer on law etc.; Cato Institute. Election law, Maryland civic stuff, cooking. Blogged at Overlawyered back when. No kings, no tyrants.
Henry Farrell @himself.bsky.social Professor of democracy and international affairs. http://www.henryfarrell.net and newsletter at http://www.programmablemutter.com. Underground Empire: How America Weaponized the World Economy (Holt, Penguin). https://www.publishersweekly.com/9781250840554.
Alex Turnbull @alejandroturnbull.space Chief Rocket Wrangler at UC Riverside's Highlander Space Program and writer at @spacescout.bsky.social - working on dark matter detection, high power rockets, and whatever else catches my interest.
www.alejandroturnbull.space
π³οΈβπ
Conor O'Kane @conorokane.bsky.social Game Developer, Miniature Painter, Simulation Engineer.
http://cokane.com
Bianca Foltan @bfoltan.bsky.social 
Madelyn Leembruggen, PhD @mleembruggen.bsky.social Science communicator and educator
Harvard | PhD in Theoretical Physics
π΅π
Randall Munroe @xkcd.com 
@megsylhydrazine.bsky.social @megsylhydrazine.bsky.social 
Sharang Biswas @sharangbiswas.bsky.social Games, writing, art. ENnies, IndieCade, IGDN winner. Teaching at NYU & Fordham
Words: Eurogamer, Lightspeed, Augur, Strange Horizons, Baffling. SFWA member
THE IRON BELOW REMEMBERS is out from Neon Hemlock Press!
Repped by @glassglassmadeof.bsky.social
NASAWATCH @nasawatch.bsky.social NASAWATCH.com - Unofficial Space News Since 1996
Michele Berdinis @beelinelegal.bsky.social Beeline Legal provides trademark registration legal services through a web-based expert system designed and backed by an experienced trademark attorney.
Emerald City Comic Con @emeraldcitycon.bsky.social Emerald City Comic Con (ECCC) is the premier comic book & pop culture convention in the Pacific NW. March 4-7, 2027. Official hashtag is #ECCC
linktr.ee/emeraldcitycomiccon
privacy.rxglobal.com/en-gb.html
Laurel Anderson @laurela.bsky.social Physics postdoc at UW studying 2D van der Waals materials. Harvard PhD on the same, but also in fewer dimensions. She/her. 
Josh Hopkins @spacejosh.bsky.social Designer of spacecraft and writer/editor in the space industry. History buff, rocket geek, orbits nerd, asteroid enthusiast, airship and aviation fan. Allergy warning: posts may contain puns.
Tim Blais @acapellascience.bsky.social a capella scientist
http://patreon.com/acapellascience
Flight Club @flightclub.io One-click rocket science
hellwolf uwuβ¨ @blaineless.bsky.social walkable cities. modern dystopian survival. geopol in a burning world π₯β²οΈπ±
Scott Manley @handle.invalid β οΈ MIRROR OF twitter.com/DJSnM
β οΈ If you own the original account and want to claim this, please contact @twttr-mirrors.bsky.social
Brandon Haber @malderi.techhub.social.ap.brid.gy Space, software, and birds. Flight Software Lead for the Dragonfly mission to Saturn's moon Titan at JHU/APL. Former: Shuttle, Orion, New Shepard... and [β¦]
[bridged from https://techhub.social/@malderi on the fediverse by https://fed.brid.gy/ ]
Dan Buckland @danbuckland.me Professional: Emergency Medicine and Engineering, some human spaceflight research
Location: Madison, WI
Been here a while, but delete posts >~45 days
Stuart Forman @s24man.bsky.social
Will only very occasionally post about movies, D&D, ICU medicine, comics, astrophotography, science, Cal Bears, Padres, and other random crap that interests me.
Vicky Stein (agentredsquirrel) @vicky.science The friend you send bug pictures to. Also accepting dead-thing-on-beach pictures, dog pictures, and stories about your cats.
Dr. Doctor @actualdrdoctor.bsky.social Climate Scientist π | Astrophysicist π | Memes π«‘ | Coffee βοΈ | Travel βοΈ | PDX -> Chi
Yve β‘οΈ Furpocalypse @yvethered.bsky.social Puppeteer, StopMo Fabricator, Costumer, Artist, Musician! They/Them http://linktr.ee/badgerpaws
Anna Wadhwa @imastroanna.bsky.social Harvard MD + MIT AeroAstro PhD student π₯Ό prev @ NASA π medicine and human space exploration πββ¬πͺ΄ποΈ πββοΈπ dare to disturb the universe β¨
https://linktr.ee/ImAstroAnna
πΈ Amanda Gilliam Valentic @amandagv.bsky.social Descriptor. Irreverent descriptor. Detailed descriptor. Profession. Hobbies. Nouns! Nouns! Nouns! A work in progress.
Fraser Cain @fcain.universetoday.com Space journalist and skywatcher. I'm the publisher of Universe Today (universetoday.com) and co-host of Astronomy Cast (astronomycast.com). YouTube: https://www.youtube.com/@frasercain
SpaceKate @spacekate.bsky.social Space journalist, rocket chaser, storyteller. Advocate for diversity and women in STEM. ISU SSP12. Alter-ego of @radiokate.com
www.youtube.com/@NTKSpace
Shannon Stirone @shannonstirone.bsky.social Writer in nyc. Space nerd. Mars is a Hellhole. Bylines in NYTβs, The Atlantic, Wired, Esquire, Longreads, & others. Anti fascist. Opinions are mine. Climate by day.
signal: shannonstirone.78
https://natureofthings.substack.com/
shannonstirone.com
International Space Elevator Consortium @isecdotorg.bsky.social Our vision: Space Elevators are the 'Green Road to Space', enabling humanity's most important space missions by moving massive tonnage to GEO and beyond. They accomplish this safely, routinely, inexpensively, and are environmentally neutral.
Seven Machina Rasmussen @toomanyspectra.bsky.social humanoid astrobiologist π SFF author (largely oxygen by mass) π transhumanist π€ star trek autism character π she/they π³οΈβπ instructor @ Columbia βοΈ CLOUDY WITH A CHANCE OF STARSHIPS now availabile wherever books are sold π
sevenrasmussen.com
PMC Vanguardist @tylerboschert.bsky.social Patent attorney in Denver (views solely my own). Liberal. Erstwhile Rockies fan. He/him. Uphold Pee Wee Reese Thought: if you can take my job, you're entitled to it.
Emily Calandrelli @thespacegal.bsky.social 
Felicia Day @felicia.day Actor. Writer. Producer. Internet Native. βLost Daughter of Spartaβ out March 17, preorder now! https://bit.ly/LostDaughterOfSparta
Robert Zubrin @zubrin.bsky.social Science, Space Exploration, & Energy Technology. Freethinker. For human liberty and the Western alliance.
Also the inventor of Three Player Chess.
Tomorrowland Times @tomorrowlandtimes.com Where dreamers stick together. The unofficial home for fans of Disney's Tomorrowland movie.
Trevor Mahlmann @tmahlmann.com pictures
Amy Shira Teitel @amyshirateitel.bsky.social Author, historian, streamer, YouTuber, writer.
Dan Fagin @danfagin.bsky.social Professing science journalism, directing NYU's SHERP. 62-time loser, 1-time winner of the Pulitzer Prize in General Nonfiction. Probably off chasing π¦ somewhere.
Alison Frankel @alisonfrankel.bsky.social Senior advisor to the Ethics and Journalism Initiative at NYU. Ex-legal journo. Cat lady.
J.L. Galache @jlgalache.bsky.social Open Science, Space Resources, Asteroids, Entrepreneurship, Cycling, Pasta...
Jeff Foust @jfoust.bsky.social Senior Staff Writer, SpaceNews. Tips? Email jfoust@spacenews.com or contact on Signal: jfoust.58.
Casey Handmer PhD @cjhandmer.bsky.social Most active on X. Physicist, Immigrant, Pilot, Dad. Former Caltech, Hyperloop, NASA JPL. Founder Terraform Industries. Build more solar!
Simon Proud @simonsat.bsky.social
I work at the European Space Agency as the mission scientist for the Sentinel-2 and Sentinel-3 next generation missions.
I mainly post nice pictures of the Earth from space!
Note: Not an official ESA account, opinions are my own and mine alone!
Jason Major @jpmajor.bsky.social I post cool pictures of stuff in space. (Everything is in space.)
Tom Nichols @radiofreetom.bsky.social Staff writer at The Atlantic. Cat guy, Jeopardy champ. New Englander and curmudgeon. Speaker info: https://www.leighbureau.com/speakers/tnichols
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.
Bugatti Spaceships π π©πΎβπ @astronaia.bsky.social To God be the Glory | Aerospace Engineer | PhD Student | NASA Space Fellow | #ForbesUnder30 | Future Astronaut β¨ she/her | opinions mine
https://linktr.ee/astronaia
Will Pomerantz @pomerantz.bsky.social Head of Space at AeroVironment - my team makes Mars helicopters. Co-Founder, Brooke Owens Fellowship and Patti Grace Fellowship. Former planetary scientist. Husband, Dad, and Den Leader
Eric Berger @sciguyspace.bsky.social Senior Space Editor, Ars Technica. Likes rockets. 
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
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
Dr. Tanya Harrison @tanyaofmars.bsky.social βVery Respected Science Personβ -NBC News
π΄ Former science operations for NASA Mars missions
π°οΈ Current space sector strategist & author advocating for Earth
π Based in Ottawa but often found on a train
β¨π¨π¦π³οΈβπβ¨
Ramez Naam @ramez.bsky.social Author of the Nexus trilogy. Climate tech investor, author, and activist. Optimistic about the future. 
Bobak Ferdowsi @ferdowsi.bsky.social Spacecraft engineer
Business insiderβs sexiest scientist of 2013
1553 is the best protocol, change my mind
luc is figuring it out β»οΈπ°οΈ @lucriesbeck.bsky.social π§ π Space, Climate, Tech, Justice. It could be better than this. he/they 
Photon Empress πΈ @photonempress.bsky.social Massive Disney Parks geek. Creator of web show @TMRO. Lover of technology. Sith.
Views and opinions my own
Jonathan Goff @rocketrepreneur.bsky.social Your typical mild-mannered recovering rocket engineer, husband and father of four crazy boys, serial space-entrepreneur, and proprietor of the Selenian Boondocks blog. 
Moffett Hangar 1 @moffetthangar1.bsky.social Hi! I'm a huge building, built 1932. I've housed airships. Silicon Valley icon. It rains in me. Leased to Google. Follow me for more recipes and blimps. Pronouns: it/it
@MoffettHangar1@sfba.social
Percy the Mars Rover @percyrover.bsky.social Proud immigrant, social distancing on Mars, and serving up piping hot cafecito. Parody. Created by @richferro.com
The First Amendment @usconstamendi.bsky.social I am the First Amendment. I love to post about myself. Take advantage of me but please don't violate me. 
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
Ian Y. @icyprop.bsky.social
Space industry, focused on sending people to space. 
Mary Robinette Kowal @maryrobinettekowal.com Hugo, Nebula, and Locus Award-winning and USA Today best-selling author, narrator, and professional puppeteer. Also has a talking cat. Latest title: Apprehension.
John Scalzi @scalzi.com I enjoy pie.
Social Media FAQ: https://whatever.scalzi.com/2025/04/16/the-official-john-scalzi-social-media-faq/
Ethan Siegel @startswithabang.bsky.social Cosmologist, science communicator, author, speaker, and longtime writer of Starts With A Bang.
Not the next Carl Sagan; the first Ethan Siegel.
Peter R Hague @peterrhague.bsky.social 
Hank Green @hankgreen.bsky.social Long Time Internet Guy
Lisa Fagin Davis @lisafdavis.bsky.social Medievalist, Paleographer, Codicologist, Voynichologist; Executive Director, @medievalacademy.bsky.social; Brown Univ. and Yale Univ. alum; PhD; Red Sox fan
Adam Savage @asavage.bsky.social Maker. Science Communicator. Connector. 
Popehat @kenwhite.bsky.social Defunct account of Ken White, criminal defense attorney and First Amendment litigator. Co-host of Serious Trouble podcast and writer at The Popehat Report. Opinions here are my own. Decent people fight evil.
Signal: KenWhite.1969
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
π³οΈβπ π³οΈββ§οΈ (she/her), β
Website: https://emily.space
GitHub: https://github.com/emilyhunt
Katie Mack @astrokatie.com Cosmologist, pilot, author, connoisseur of cosmic catastrophes. TEDFellow, CIFAR Azrieli Global Scholar. Domain verified through my personal astrokatie.com website. She/her. Dr.
Personal account; not speaking for employer or anyone else.
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.
CosmicRami π³οΈβππ³οΈββ§οΈ @rami.spaceaustralia.com Astronomer, driving The Dishπ‘ to study pulsars in my PhD. Also, founded SpaceAustralia.com. Also, love a bit of astrophotography. Also, do everything with my little mate, Max. Also, Ultra-Gay. He/Him.
Mike Brown @plutokiller.com Astronomer, planet hunter, Pluto killer, bear whisperer, finger-wrapped dad. Dangerous secularist. Foot soldier in the War on Cars. He/him.
mikebrown.caltech.edu
Emily Lakdawalla π³οΈββ§οΈ Uranus Expert @elakdawalla.bsky.social Planetary scientist, freelance science writer and space artist, queer, ADHD, mom. Turns out itβs hard to be all those things at once. Shop at elakdawalla.Etsy.com
Nora's Guide to the Galaxy @ngttg.bsky.social I love space!
PhD, Astrophysics
SFF Author
πππ©βππ πͺ
π: https://galaxy.nora-bailey.com/linktree
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
sanjana! @sanjanacurtis.bsky.social big fan of stars π»β¨π¦«π³οΈβπ
Sarah Tuttle @niais.cryptoanarchy.network "Ok. Not good. Probably bad." Disabled, queer, Jewish, cyborg, astrophysicist, abortion funder, antifascist, wielder of wrenches. Building joy with a side of chaos. "..a wizardess is never late. Nor is she early. She arrives precisely when she means to."
Sarah HΓΆrst @planetdr.bsky.social Professor of planetary science at Johns Hopkins. Titanβs biggest fan. Pomeranian wrangler. Runner. Love many, trust few, always paddle your own canoe. She/her. sarahhorst.com
Planetdr.26 on signal
Dr. Raven the Science Maven @ravenscimaven.bsky.social I'm Raven Baxter, Ph.D. I'm molecular biologist and science educator who loves sharing science with the world! thesciencemaven.com
Jonathan McDowell @planet4589.bsky.social Astrophysicist
Support the work of Jonathan's Space Report:
https://www.gofundme.com/f/fund-jonathans-space-report-library-transition
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.
Karen Masters @karenlmasters.bsky.social Prof. of Astronomy and Physics, Haverford College. PI of Galaxy Zoo. Radio astronomer. Check out my latest book βThe Astronomers Libraryβ about books, libraries and astronomy - three of my favourite things. Brit/US.
Mike Boylan-Kolchin @mbkplus.bsky.social Dad, husband, astrophysicist, dog herder. Samuel T. and Fern Yanagisawa Regents Professor in Astronomy at UT Austin. This is a personal account and the views expressed in my posts here are mine. https://mrbk.github.io
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). PΔkehΔ; she
Yvette Cendes @whereisyvette.bsky.social Astronomer here! Iβm a Hungarian-American radio astronomer, alias /r/Andromeda321 on Reddit. Assistant professor at the University of Oregon 
Nicole Gugliucci @noisyastronomer.com Physics professor, astronomer, educator, science communicator in NH, US. Lover of dogs, spec-fic, weights, and good trouble. She/they.
Opinions my own. RTsβ endorsements. Most older posts auto-delete.
I swear a lot.
https://bio.link/noisyastronomer
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
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)
Dr. Lucian Walkowicz @notnotrocketscience.com Astronomer, movement artist, & educator based in Chicago πΈ Founder, Not Not Rocket Science β¨Co-founder, the JustSpace Alliance πthey/them causing mayhem
notnotrocketscience.com
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.