ESO @eso.org The European Southern Observatory designs, builds & operates world-class observatories on the ground for the benefit of society. More info on eso.org
Mehdi Hasan @mehdirhasan.bsky.social Editor and CEO, Zeteo
Author, ‘Win Every Argument’
British-American
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
Tony Patrickson @anpatric.bsky.social Originally art, nowadays lecturing in moving images. Part cirrus cloud. Functional introvert. West of Ireland. That's enough excitement for now.
European Space Agency @esa.int Elevating the future of Europe through space.
Please see our Privacy Notice: https://esa.int/connectwithus
Royal Astronomical Society @royalastrosoc.bsky.social www.ras.ac.uk
Dr Vicky Fawcett @astrofawcett.bsky.social @eso.org Fellow in Garching studying active galaxies ✨ Science communicator, music lover
www.astrofawcett.com
The Shipping Forecast ⚓️ @shippingforecast.bsky.social I'm Finisterre, the experimental bot mapping the day's shipping forecast details from around the British Isles using public Met Office data ⚓️
(Originally on 'the bird app' but now prefer it here - this isn't a BBC or Met Office account)
AJC @xyzzy.cryptoanarchy.network married to @torsosquirrel.bsky.social
TRANS RIGHTS ARE HUMAN RIGHTS.
Just a cishet autistic white guy trying to listen to the world and be kind. I do DevOps for work, walk and photography for fun. I ask stupid questions, I know and I'm sorry.
Mark Hamill @markhamillofficial.bsky.social Believe in yourself! Work hard, never give up & anything's possible! OR: Kick back, relax & aim low: You'll never be disappointed...😜
Sian Berry MP @sianberry.bsky.social Green MP for Brighton Pavilion since 2024. Challenging Labour to do better at all levels of Govt since 2014. She/her. Promoted by Chris Williams on behalf of the Green Party at POBox 78066 SE16 9GQ
Alice Roberts @profaliceroberts.bsky.social Prof of Public Engagement in Science, Uni of Birmingham; anatomist, author, broadcaster; vice President of Humanists UK. All views my own.
skircle @skircle.me Bluesky Interaction Circles
👉 https://skircle.me
Missing a feature? Drop us a DM!
✨🧛🩸Aerith the vampire princess ✨🧛🩸 @moonarcadia.bsky.social ~ Flugel's Castle of Glass ~
Multifandom & Anime lover
Current obsessions: The Journey to the past, who made me a princess, Re:Zero, Dark Moon.
Dr. Fred J. Calef III @mapperwocky.bsky.social Science Systems Engineer @NASA/JPL-Caltech. PhD in Geology. 30+ years Geospatial experience. PI for the FOSS4G Multi-Mission Geographic Information System (MMGIS https://github.com/NASA-AMMOS/MMGIS).
Not a NASA account.
Never met a rock I wouldn’t lick.
Harro Hofman @harrohofman.bsky.social Time flies when you're having none...
#oostenrijk #wadden #weer #klimaat en #wielrennen.
uoɯolɐS uɐƃɹoW uɥoſ @fuzzybunny.org Interested in security, geopolitics, propaganda, choo choo trains, and other cool stuff.
Started out with infosec content, now I just post secret, important things for the edification of all mankind. Consider yourself edified.
Obligatory #FCKPTN #NAFO
SkyCalPro | Kev @skycalpro.com 🔭I loved CalSky🛰️the app to that tells you what you will see if you look up at the sky tonight. 🪐 I waited for someone to recreate it after it went offline but no-one did so I created it myself...💫
https://skycalpro.com
GOFlaherty @goflaherty.bsky.social 🛰️ Space nerd🚀
Dave @photonphanatic.bsky.social I shoot astrophotographs for fun. Retired/recovering engineer. Husband, dad, stepdad, granddad, bird dad, snowbird.
Guy Watkins @guywatkins.bsky.social 🪐 MPhys Astrophysics with Space Science student at The Open University.
🪐 Aspiring astrobiologist/planetary scientist. FRAS.
🪐 http://guywatkins.space
🏃 Novice trail runner
Mary McIntyre @marymcintyreastro.bsky.social Astronomy communicator/writer, astrophotographer, space artist, 4 GMN meteor cameras, microscopy, bass player, lover of cats and cakes. Co-author of the Collin's Stargazer's Bible.
Website: marymcintyreastronomy.co.uk
Δ Ren Aviel Zohara @prismaticstreams.bsky.social Artist, mentor and creative catalyst. 🌀 Located on Ngunnawal & Ngambri land. Canberra, Australia 🇦🇺 https://linktr.ee/prismaticstreams
Dave Bate (Maverick) @va3dbj.ca Amateur radio operator (VA3DBJ/VE3UDB), amateur astronomer, flight sim nut and all-round space/military cadet. Supporter of RAC, ARRL, the Canadian Forces Affiliate Radio System and the US Military Auxiliary Radio System.
𝗪𝗲𝗮𝘁𝗵𝗲𝗿𝗚𝗲𝗲𝗸 @wessexweather.net 𝗦𝗶𝗺𝗼𝗻 • 𝗠𝟳𝗪𝗪𝗫 • 𝟯𝟮𝟯.𝟬𝟰 𝗽𝗽𝗺
𝗜𝗻𝗱𝗲𝗽𝗲𝗻𝗱𝗲𝗻𝘁 #𝗪𝗲𝗮𝘁𝗵𝗲𝗿 𝗦𝘁𝗮𝘁𝗶𝗼𝗻 𝗻𝗲𝗮𝗿 𝗪𝗶𝗺𝗯𝗼𝗿𝗻𝗲 #𝗗𝗼𝗿𝘀𝗲𝘁 🇬🇧
• #WX • #Meteorology • #Clouds
• #Climate • #ClimateChange
• #Astronomy • #AstroPhotography
• #Radio • #Satellite
⚠️ 𝗣𝗲𝗿𝘀𝗼𝗻𝗮𝗹 𝗮𝗰𝗰𝗼𝘂𝗻𝘁!
🌍 wessexweather.net
Orbital Policy Group @druidorbital.bsky.social Viewpoints and opinions on policy issues relating to Low Earth Orbit, including policy, science, governance, and cybersecurity.
Astronomy Acres @astronomyacres.com Astronomy Acres Remote Observatories (AARO) is a remote hosting observatory for astrophotographers nestled under Bortle 1 skies in rural SW New Mexico.
To learn how we can host your gear - visit https://astronomyacres.com
💚🧡💙Oakbrook❤️💛💜 @oakbrook.bsky.social Scientist, Artist, Aviator, Gamer. Retired PhD.
Love all things science, especially Earth and planetary.
Helping to bring sanity and ethics back to America. Voted Dem!
I'm fiscally moderate, socially liberal, and chaotic good.
Yes, I created the fractal.
Nigel P Meredith @nigelpmeredith.bsky.social Space Weather Research Scientist @bas.ac.uk studying the near-Earth space environment. Broadcasting with @soundsofspacep.bsky.social 🌏📡🛰️☄️🪐🌌🎵🎹.
#Astronomy #Aurora #FieldRecordings #SciArt #SciComms #Space
🎧 soundsofspaceproject.bandcamp.com
@theastroastro.bsky.social @theastroastro.bsky.social 
The Pinwheel Cluster (Messier 36) @ngc1960.bsky.social Loosely organised. Mostly big, bright and blue. Live fast, shine bright and die young. Auriga.
Astronomy Live @astronomylive.bsky.social Amateur astronomer and neuroscientist, opinions are my own, please don't harass my employer
Del - Martian Observer @martian-observer.net Interests: Mars, space, photography, and blender 3D.
Location: Hampshire, UK.
Mars images: https://www.flickr.com/photos/134331707@N02/albums/72177720313447009
Mars images and updates: @mars.martian-observer.net
Ko-fi https://ko-fi.com/martian_observer
Harry Baker @harryjpbaker.bsky.social Science journalist | Senior staff writer at @livescience.com | Sometimes found on @space.com | 2024 Aerospace Media Award winner | 2023 NCTJ Awards finalist | #earthfromspace series | https://linktr.ee/harryjpbaker
Space VFX @spacevfx.bsky.social Sci-Fi ∵ Space Inspired ∴ Fictional Digital Works © By Me
Proud cat dad loving countryside life ⧆ Left-wing ideas from generosity, empathy, and love for nature, animals, planet ⧆ Not an artist ⧆ Welcome all—open-minded, inclusive, respectful fun together.
Prof Christina Pagel @chrischirp.bsky.social Prof Operational Research , @UCL_CORU, passionate about health care, women in STEMs, defending liberal democracy (!). Member of @independentsage, posts personal. https://www.trumpactiontracker.info/
Quake Alert - Earthquake Monitor @earthquakes.live Bot posting quakes Mag.4+ worldwide in near-real time. Filter #M4+ #M5+ #M6+ Felt one? quakes.online/report
Larger quakes+stats: @quakes.online Regional: USA @us.earthquakes.live + many more | Web: allquakes.com / volcano.link Android: volcano.link/app
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/
Erin M. May, PhD @astronomay.bsky.social Staff Astronomer @ a place - Exoplanet Atmospheres. All data is good data.
Plus Knitting, Stickers, Baking, and other crafty things. Toddler mom.
Previously known as @_astronoMay on the other site.
ErinMMay.com
SiderealStickers.Etsy.com
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.
Dr. Timothy Pickering @tepickering.bsky.social astronomer, telescope wrangler, grizzled pythonista, bluesky boomer
Peter Coles 🏳️🌈 🏳️⚧️ 🇮🇪 @telescoper.bsky.social Theoretical astrophysicist specializing in the Universe and all that surrounds it. Based in Ireland. Personal account. Call me old-fashioned but I don't like fascists. He/him/his.
Blog: telescoper.blog
NSF–DOE Rubin Observatory @vrubinobs.bsky.social Get ready for a new era in astronomy and astrophysics with Rubin Observatory!
Para español siga a Instagram: http://instagram.com/rubin_observatory
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
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
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.
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
sanjana! @sanjanacurtis.bsky.social big fan of stars 💻✨🦫🏳️🌈
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
🔭☕️🎤
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
Markus Pössel @mpoessel.de Astronomy and relativity outreach (Tweets in German & English) | personal account | he/his | managing scientist @hausderastronomie.bsky.social | director @astro4edu.bsky.social |outreach @mpi-astro.bsky.social | Seestar enthusiast
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.
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 
Black In Astro @blackinastro.bsky.social Celebrating and amplifying the Black experience in space-related fields. EST. 2020
✉️ blackinastro@gmail.com
Website: blackinastro.com
https://www.blackinastro.com/black-space-week-2026
Sarah Tuttle @niais.bsky.social Disabled, queer, Jewish, (chimerical?) cyborg, load bearing, professor of space stuff, abortion funder, antifascist, wielder of wrenches and too many pens. Building joy with a side of chaos. Team Lightning Thunder Unicorn. Team Peace Rose.
Thomas Fuchs @thomasfuchs.at 20 years ago I killed Flash with my #JavaScript library script.aculo.us. Now mostly petting cats. Also dabbling in #retrocomputing and #astrophotography.
He/him.
Dr. Kelley Hess @khesser.bsky.social Astronomer/Senior Researcher at Onsala Space Observatory/Chalmers University, Sweden; ultra runner, adventure racer, cyclist. Ironman WC 2012, 2014. Xterra World Champs 2014.
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
Nicole Gugliucci @noisyastronomer.com Physics professor, astronomer, education researcher, and scicommer who loves dogs, speculative fiction, weights, and good trouble. NH, US. She/They.
Opinions are mine alone. RT≠endorsement. Posts are ephemeral.
I swear a lot.
noisyastronomer.com
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
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
Michelle Collins @runningastronomer.bsky.social ✨Astronomer searching for and studying the faintest galaxies in the Universe ✨co-host of the @starxiv.bsky.social podcast ✨ Enthusiastic-but-mediocre runner 🏃🏻♀️ vegan 🌱 She/her
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.
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
Nora's Guide to the Galaxy @ngttg.bsky.social I love space!
PhD, Astrophysics
🌌✨✨🌌
come explore our galaxy with me
🔗: https://galaxy.nora-bailey.com/linktree
Space Telescope Science Institute @stsci.edu STScI is the Science Operations Center for Webb, Hubble, and the upcoming Roman space telescopes, & Mission Operations Center for Webb. We help humanity explore the universe with advanced space telescopes and data archive. news.stsci.edu
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.
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)
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
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
CosmicRami 🏳️🌈🏳️⚧️ @rami.spaceaustralia.com Astronomer, driving The Dish📡 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
Jwst Feed @jwstfeed.bsky.social James Webb - Everything That's Hot 🔥
jwstfeed.com
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
Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social Storm chaser. Volcano hunter. University Physics, Astronomy, & Earth Science Instructor. MS Physics/BS Astrophysics. Rockhounder & Mineral Collector. Raccoon whisperer. Allow me to share our planet's beauty with you. linktr.ee/spahn711
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
Raven Baxter, Ph.D. @ravenscimaven.bsky.social Dr. Raven the Science Maven. Molecular biologist, science communicator, entrepreneur.
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
Emily Hunt @emily.space Postdoc @univie.ac.at working on star clusters & machine learning
Passionate about a better future for science communication via @astrosky.eco
🏳️🌈 🏳️⚧️ (she/her), Ⓥ
Website: https://emily.space
GitHub: https://github.com/emilyhunt
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.
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.
Randall Munroe @xkcd.com 
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 🧪🔭🚀🛰️☄️
Jeremy @pcnerd37.bsky.social I'm a senior software developer, astronomy geek, gamer and metalhead among other things. I mainly tweet & retweet things related to those subjects.
Craig Ogier (Official) @craigogier.bsky.social Intuitive and psychic profiler - mentoring, coaching and advising those who are awakening, wanting to discover who they are, and wanting to fulfil their purpose and mission in life.
https://www.craigogier.com/linktree
Rob Tilsley @stargazerrob.bsky.social Astrophotography shenanigans.
SadrAstro Observatory @sadrastro.com Skeeting across the cosmos. #space #astronomy #astrophotography #science - Join our Online Observatory based in Texas offering downloads of our beautiful dark-sky wide-field and DSO data sets. https://sadrastro.com
Jasmine 🌌🔭 @astrojaz.bsky.social 🪐 utsa/swri physics phd student | ❄️ europa clipper grad affiliate | 🚀 nasa solar system ambassador
space news • photos • facts ↓ links
https://beacons.ai/astrojaz
ASTROPUNK @astropunkco.bsky.social 
@kallen21.bsky.social @kallen21.bsky.social 
Michael TTRPG Starved🌈📚🐻🖖 @mrbear-atl.bsky.social Atlanta. 1 of 3 Bears. Polyamorous.
Sci-Fi geek & Lover of astronomy and space sciences in general.
Obsessive-compulsive collector of books.
List of authors who sell wide: https://drive.google.com/drive/folders/1DWIJ8p8S6EOOxQjq3Vq9PSUrhwD0uGJ1?usp=sharin
Mark Thompson @astronomer-mark.bsky.social Broadcaster & Author exploring STEM through TV, radio, theatre & books | BBC Stargazing Live | Hon Doc from @UEA | Fascinated by sleep | office@josarsby.com
Paul Murphy @bbcpaulmurphy.bsky.social BBC Correspondent, based in Yorkshire & Lincolnshire in the UK. Environment, energy and climate interests.
Stories to firstname.lastname@bbc.co.uk
File uploads: https://yourls.paulmurphy.synology.me/paul
Bat Conservation Trust @batconservation.bsky.social Bat squeaks by Joe and Andreia with occasional special guests! Posts are not endorsements. 🦇
www.linktr.ee/BatConservationTrust
Mark Scheuern @mgscheue.bsky.social Dog and cat daddy, photographer, modular synth noise maker, physics and math teacher.
Martin Bracken - FRAS -CitySpaceAstro @cityspaceastro.bsky.social
Martin Bracken FRAS,
STEM ambassador, Fellow of the Royal Astronomical Society. Astronomer and Astrophotographer imaging the cosmos from my backgarden in Chelmsford UK. Published Images in Astronomy, Sky & Telescope, Sky at Night & Astronomy Now Magazine