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.
David Ho @davidho.bsky.social Climate scientist; ocean carbon cycle and climate solutions. Professor @soest.hawaii.edu, University of Hawaiʻi at Mānoa; Visiting Faculty, Arizona State University. https://linktr.ee/david_ho
Museum of Science @museumofscience.bsky.social Inspiring a lifelong love of science in everyone - in museums, classrooms and online. We believe in a world where science belongs to everyone.
IAU Office of Astronomy for Education @astro4edu.bsky.social The Office of Astronomy for Education (OAE) of the International Astronomical Union, hosted at @hausderastronomie.bsky.social
https://haus-der-astronomie.de/de/impressum
Red Emma’s @redemmas.org Worker-owned radical bookstore and cafe in Baltimore, the greatest city in America
Senator Chris Van Hollen @vanhollen.senate.gov U.S. Senator for Maryland
vanhollen.senate.gov
Maria R. Drout @mrdrout.bsky.social Astronomer, travel, holder of quiet opinions | Assoc. Prof @UofToronto
Matt Payne @mattpaynephoto.bsky.social Full-time Nature Photographer, Host of the F-Stop Collaborate and Listen Podcast, Muench Workshops Pro. https://www.mattpaynephotography.com/page/quick-links/
Chris Mihos @chrismihos.bsky.social astronomer, frustrated sports fan, perpetually confused family man.
Sean D. Johnson @seanjohnson.bsky.social Extragalactic astronomer; LSA Collegiate Fellow & Assistant Professor at @michiganastro. Dog lover. Pronouns: he/him/his 🏳️🌈
Ethan Vishniac 🇺🇦🇨🇦🇺🇸 @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
Karin Sandstrom @karinsandstrom.bsky.social Astronomer. Professor at UC San Diego. Lover of coffee, interstellar dust, California, nerdy stuff. she/her
John F Wu @jwuphysics.bsky.social Tenure-track astronomer working on galaxies, machine learning, and AI for scientific discovery. Opinions my own. He/him.
Website: https://jwuphysics.github.io/
Danny Milisavljevic @danmil.bsky.social Associate Professor of Physics and Astronomy at Purdue University. Excitable Explorer of the Universe. Opinions are my own.
Nienke van der Marel @nienkemarel.bsky.social Assistant professor of astronomy at Leiden Observatory | Leiden University | Formerly 🇨🇦&🇺🇲 | Planet formation | ALMA | Astromom | Outreach | She/her/hers | Views my own
J W @polymath-wannabe.bsky.social Engineer, technologist, scientist, communicator
Cybersecurity, weather, and infectious disease junkie
Builder of things. Interested in too many topics for my own good.
* Skeets not representative of my employer *
Logan Jones @astrolojo.bsky.social dark circles and spectral lines
Astronomy postdoc • Perpetually online • Probably napping on the couch
Kazu Akiyama @kazuakiyama.bsky.social Deputy Project Scientist of EHT (@ehtelescope.bsky.social), @Heriot-Watt (@heriotwattuni.bsky.social), ex: PI@MIT (@haystack.mit.edu). Photographing black holes. Dad. @Edinburgh, Scotland🏴, UK🇬🇧
Tweeting in 🇬🇧/🇯🇵
Website: https://sites.mit.edu/kazuakiyama
ASTRON @astronnl.bsky.social ASTRON is the Netherlands Institute for Radio Astronomy. Our mission is to make discoveries in radio astronomy happen. We develop new and innovative technologies, operate world-class radio astronomy facilities, and pursue fundamental astronomical research.
Sangeeta Malhotra @astrodame.bsky.social Astronomer, dog feeder, bird watcher, maker of bad, dad jokes.
Views expressed are all mine, and not of my employer, family, or voices in my head.
John Debes @johndebes.bsky.social ESA/AURA astronomer at STScI. Opinions my own. I study exoplanets and disks around stars.
Darshan Kakkad @darshankakkad.bsky.social Fellow at University of Hertfordshire
Daniel Viñé @danielvgphoto.bsky.social 📸 Daniel Viñé
🌋 Landscape Photographer | Spain 🇪🇸
❤️ Epic landscapes & Night skies
✌️ www.danielvgphoto.com
https://www.instagram.com/danielvgphoto/
janiceleeastro @janiceleeastro.bsky.social ✨ looking to our future with NASA's Habitable Worlds Observatory (SuperHubble!) & AI
✨ studying star formation and star clusters in nearby galaxies with PHANGS, Hubble, JWST
Dr Pamela L Gay @starstryder.space I am an astronomer, technologist, and creative focused on using new media to engage people in learning and doing science. Note: I have dyslexia and will typo. OMG will I typo...
Storm Chaser Cheyenne Sutherland @teamdakota.bsky.social Storm chaser/Photographer based out of S.E Iowa 🌪️⛈️
Traveling the States chasing storms and providing aid where needed
Currently a meteorology student/amateur meteorologist.
My main chase vehicle is a red Dodge Dakota “Mini Twister Truck”
Rachel Friesen @cosmic-rae.bsky.social 
Armand Sarlangue @armandsarlangue.bsky.social Endless search for ART in NATURE
Full time photographer & photo tours guide
Mountain addict & glaciers lover 🏔️📷🧊
Real places only
More about my work at armandsarlangue.com
Rachel Maddow @maddow.bsky.social Mondays at 9pmET on MS NOW
MaddowBlog.com
Forrest Brazeal @forrestbrazeal.bsky.social Cofounder at Freeman & Forrest, author, cartoonist, and Pwnie Award-winning songwriter. Ex-Google. Here to help.
Sarah Andersen @sarahseeandersen.bsky.social No NFTs, No A.I.
linktr.ee/sarahcandersen
Sarah Kendrew @sarahkendrew.bsky.social European Space Agency Astronomer at the Space Telescope Science Institute in Baltimore, MD. Team Lead for the MIRI instrument on JWST. Runner, dog mum, cyclist. 🇬🇧🇧🇪 Opinions my own. 
Kathryn Thornwood @kathrynthornwood.com 🌘 She/Her 🌗 Bisexual 🌖 ADHD 🌕 Stargazer 🌔 Ph.D. 🌓 Writer🌒
find me at https://kathrynthornwood.com, avatar by Sayuri Liu
They call authors omnipotent, my characters beg to differ.
Ask me about the cosmos ⭐️ and demons 😈 and magic 🔮
AI kills the planet
N. K. Jemisin @nkjemisin.bsky.social Writer. She/her.
Hsiao-Wen Chen @highzclouds.bsky.social mom, daydreamer, stargazer, astrophysicist
https://lambda.uchicago.edu
Lauren Baca 🌪️ @laurenbacawx.bsky.social 🌪 storm chaser + storm photographer
📍 New Mexico
📸 co-founder of Extreme Photo Workshops 
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
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
Philip Muirhead @philipmuirhead.bsky.social Astronomer at Boston University. Director of the Perkins Telescope Observatory.
Robert McNees @mcnees.bsky.social Physicist and Professor at a university in Chicago. I study black holes, quantum gravity, and cosmology. Rocky Top, Tar Heel. Reposts are spooky action at a distance.
My views, not my employer's.
https://jacobi.luc.edu
https://mcnees.github.io
WeRateDogs @weratedogs.com Your Only Source For Professional Dog Ratings
nonprofit: @15outof10.org ❤️🩹
links.weratedogs.com
God @thegodshow.com Creator of the Universe.
thegodshow.com
https://youtube.com/@thegodshowlive
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
Dr. Lucian Walkowicz @notnotrocketscience.com Astronomer, movement artist, & educator based in Chicago 🛸 Founder, Not Not Rocket Science ✨Co-founder, the JustSpace Alliance 🚀they/them causing mayhem
notnotrocketscience.com
Ellen Pao @ekp.bsky.social CEO of Project Include
early investor, ex-reddit, ex-VC, ex-lawyer
ellenkpao.com
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.
NPR @npr.org This is NPR 🎙️
Lisa Grossman @astrolisa.bsky.social Science journalist (current: Science News; past: New Scientist, Wired). 2023-24 Knight Science Journalism fellow. Lifelong astronomy nerd. Queer Jewish mom 🏳️🌈 she/her/hers
Renée Hlozek @reneehlozek.bsky.social South African cisgender, bisexual woman Assoc. Astrophysics Prof., Rhodes scholar. Feminist scientist. She/her
Yvette Cendes @whereisyvette.bsky.social Astronomer here! I’m a Hungarian-American radio astronomer, alias /r/Andromeda321 on Reddit. Assistant professor at the University of Oregon 
Matthew Kenworthy @mattkenworthy.bsky.social Professor of astronomy working at Leiden Observatory in the Netherlands on the direct imaging of extrasolar planets and transits of giant ring systems || Opinions my own || Will tell Dad jokes for cash. https://kenworthy.space/
Benne W. Holwerda @benneholwerda.bsky.social Dad, Professor of Astronomy at the University of Louisville. He/Him/hey you. Opinions are my own. As are the typos.
Astronomy, datascience, ethics & occasional US/EU politics. 
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
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
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/
Lake Superior @lakesuperior.bsky.social I am the greatest lake of all time. G.L.O.A.T. (she/her) #BigBeautifulWater 
Monterey Bay Aquarium @montereybayaquarium.org How do you do, fellow squids? 🌊 We're your frondly Aquarium with a mission to inspire conservation of the ocean. https://www.montereybayaquarium.org
LeVar Burton @levarburton.bsky.social Kunta, Geordi, Reading Rainbow guy. Flies twice as high… #bydhttmwfi
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
Anita Sarkeesian @anitasarkeesian.bsky.social ✨Things and Stuff✨
anitasarkeesian.com
Jennifer L. Hoffman ✨😷 @astroprofhoff.bsky.social Astronomer, professor, birder, singer, cat communer (she/her)
University of Denver, @chamberlin-obs.bsky.social
Past Grand Canyon Astronomer in Residence
Matthew Buckley @physicsmatt.bsky.social Theoretical physicist, Rutgers professor.
Science News @sciencenews.bsky.social We report on the latest news in all fields of science. See also @snexplores.bsky.social
Vivian U @justtheletteru.bsky.social Associate Scientist at Caltech/IPAC studying black holes and galaxy mergers with a nerdy sense of humor. Roman Proposal Lead. < 15 minutes of fame from PBS NOVA showcasing JWST science. TEDxMB 2024 speaker. Views are my own.
🌐 https://vivian-u.github.io/
Jason Wright @astrowright.bsky.social Professor of Astronomy and Astrophysics at Penn State.
Son, father, partner, scientist, teacher, student, human, Earthling.
Mostly posting astronomy. Mostly.
Jeyhan Kartaltepe @jeyhan.bsky.social Associate Professor at RIT investigating galaxy evolution. Co-lead of the COSMOS Collaboration. Passionate about public outreach, science communication, and inclusivity. Currently working on all things JWST (especially, COSMOS-Web, CEERS, NGDEEP, PRIMER).
Rebecca Watson @skepchick.org is this the one that wins
Joe Callingham @astrojoe.bsky.social Dutch-Australian | Astrophysicist | Head of the Square Kilometre Array (SKA) Science Group at ASTRON | Associate Professor at the University of Amsterdam
Laura Lopez @ohdearz.bsky.social Professor of astronomy 🔭 at Ohio State. Co-chair of @aascsma.bsky.social. Alum of UCSC and MIT. She/her 🇲🇽
Kate Clancy @kateclancy.bsky.social Feminist science professor at the University of Illinois. Labor organizer. Author of PERIOD. Out 8/26: PREGNANCY INTERRUPTED: The Science and Stories of How Pregnancies Really End. Settler, queer. 🍉
Pre-order here! http://bit.ly/4y4DMkB
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.
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)
Prof Anna Watts @profannawatts.bsky.social Professor of Astrophysics @ Univ. of Amsterdam. Neutron stars, pulsars, dense matter, X-ray astronomy. Mom, Migrant. "Particles in stars blah blah". Does science with NICER on the International Space Station and schemes for EVEN BIGGER SPACE TELESCOPES.
Josh Simon @joshsimon.bsky.social Astronomer.
Opinions my own.
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
Science Friday @scifri.bsky.social Entertaining & educational conversations about science, tech, + more. Hosted by Ira Flatow and Flora Lichtman. From WNYCStudios.
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 🇦🇺🇨🇦. Opinions ∉ UCSC.
Santa Cruz CA, USA. He/him. bryangaensler.net
Vivienne Baldassare @viviennebaldassare.bsky.social Astrophysicist, ultra-runner, professor. Searching for the smallest super-massive black holes. I have the best border collie. 
Michael Brown @mjibrown.bsky.social Astronomer, Monash academic, Conversation writer, cycling commuter or mamil.
https://research.monash.edu/en/persons/michael-brown
Josh Peek @jegpeek.bsky.social 
Xiaohui Fan @xiaohuifan.bsky.social quasar hunter, traveller, runner, yankees fan, wine lover and the best chef in the world according to my kid. Regents' Professor of Astronomy, Univ of Arizona.
Dr Rachael Livermore @rclivermore.bsky.social Astrophysicist, science communicator, educator, convention organiser
Erik Tollerud @eteq.bsky.social Astrophysicist, Python coder, and general lover of nature in all its forms. Tweets are my own. He/they.
Dr. Stéphanie Juneau @stephajuneau.bsky.social Astrophysicist, supermassive black hole hunter, artist, public speaker, français/English/québécois 
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.
Emily Rice @emilylrice.me Astronomer at CUNY & AMNH, CEO of STARtorialist, HQ for Astronomy on Tap, I guess I’m trying to make science fun?
My shop: shop.STARtorialist.com
Jane Rigby @janerigby.bsky.social Astronomer, human, described by adjectives too dangerous to list. Views mine
Reach for the stars. But not that one — it’s about to go boom
Karen Masters @karenlmasters.bsky.social Prof. of Astronomy and Physics, Haverford College. PI of Galaxy Zoo. Radio astronomer. Check out my latest book “The Astronomers Library” about books, libraries and astronomy - three of my favourite things. Brit/US.
Emily Rauscher @astronemly.bsky.social Astronomy prof at U Michigan; exoplanet atmospheres in 3D; cares about people more than science; despises chocolate (she/her)
Grant Tremblay @granttremblay.com Astrophysicist at the Center for Astrophysics | Senior Vice President, American Astronomical Society
Julianne Dalcanton @dalcantonjd.bsky.social Astrophysicist at the Center for Computational Astrophysics & U. Washington. 
Brooke Simmons @vrooje.net Professor of Astrophysics: Galaxies, Black Holes, the Changing Sky. Also Zooniverse humanitarian and disaster relief lead. People first, then science. She/her
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
Space Telescope Science Institute @stsci.edu STScI is the Science Operations Center for Webb, Hubble, and Roman space telescopes, & Mission Operations Center for Webb. We help humanity explore the universe with advanced space telescopes and data archive. news.stsci.edu
Micro SF/F by O. Westin @microsff.com Very short science fiction/fantasy stories by O. Westin.
Please repost any you like.
Patreon: https://patreon.com/microsff
Ko-Fi: https://ko-fi.com/microsff
Books: https://microsff.com/books
Astronomy Picture of the Day 🪐 @apod.shinyakato.dev Official Mirroring APOD BOT for Bluesky.
https://apod.nasa.gov/apod/lib/about_apod.html
Src:
https://apod.nasa.gov/apod/astropix.html
http://star.ucl.ac.uk/~apod/apod/astropix.html
Maintained by @shinyakato.dev
Dr Becky Smethurst @drbecky.bsky.social Astrophysicist studying how supermassive black holes affect galaxies (s/h). I get overly enthusiastic about space (and cats) on YouTube: http://www.youtube.com/drbecky
American Astronomical Society (AAS) @aas.org The mission of the American Astronomical Society is to enhance and share humanity’s scientific understanding of the universe as a diverse and inclusive astronomical community.
aas.org
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.