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
Stephen Serjeant on W @stephenserjeant.wsocial.eu Backup a/c. Astronomy Prof at Open University. 26.2. #RejoinEU, £➡️€. Views not OU’s and often not even mine. He/him
🐘 https://mas.to/@stephenserjeant
🧵 https://www.threads.net/@prof.stephen.serjeant
ORCID https://orcid.org/0000-0002-0517-7943
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
John Womersley @johnwomersley.bsky.social Special Advisor, University of Edinburgh. Former Director General of European Spallation Source and CEO of Science and Technology Facilities Council. Physicist and cynic. Posting in a personal capcity.
T.S. Kelso @tskelso.bsky.social Operator of CelesTrak, the world's first source for orbital element sets and related software and educational materials.
STEM Response Team @stemresponsewlv.bsky.social The STEM Response Team is an award winning outreach and public engagement team from the Faculty of Science and Engineering (FSE) at the University of Wolverhampton.
Colin Stuart 🔭 @colinstuartspace.bsky.social Stories, sights & secrets of space
Astronomy writer, author & speaker
Asteroid (15347) Colinstuart
More space stories like these (free):
astroclub.colinstuart.net
@seldomsirius.bsky.social @seldomsirius.bsky.social 
Oxford Society for Science Communication and Engagement @ossce.bsky.social A student-run society at the University of Oxford, dedicated to improving access to skills and careers in science communication. Find out more at ossce.org.uk
Kate Pattle @jumpingjupiters.bsky.social Astrophysicist at University College London (UCL). Interested in all things star formation-related, many things not star formation-related, and magnetic fields! All views my own, of course.
Coach Bennett @coachbennett.bsky.social Nike Running Global Head Coach
This is about running.
This is not about running.
USA BOOK PRE-ORDERS HERE:
https://bit.ly/47DAsBy
UK, AUSTRALIA, INDIA, CANADA, NZ, EURO PRE-ORDER BOOK HERE: https://lnkfi.re/yfzwUn
MERCH: https://twocoachbennetts.com/merch
Keith Cooper @keithpcooper.bsky.social Science journalist; author of The Contact Paradox (Bloomsbury Sigma, 2019) and Amazing Worlds of Science Fiction and Science Fact (Reaktion Books, 2025), which was selected for the Locus 2025 Recommended Reading List.
IAU Working Group on Star Names (WGSN) @iau-wgsn.bsky.social Working Group on Star Names (WGSN) of the International Astronomical Union (IAU). Maintained by @susanne-m-hoffmann.bsky.social @msfa94.bsky.social
Andy Newsam @astroandyn.bsky.social Astronomer, enthusiast and manic hand-waver. All views my own, etc.
He/Him/His
Eric Berger @sciguyspace.bsky.social Senior Space Editor, Ars Technica. Likes rockets. 
NAM 2025 Durham @nam25-durham.bsky.social The 33rd @royalastrosoc.bsky.social National Astronomy Meeting is coming to @durham-university.bsky.social hosted by the CEA, CfAI, ICC, IPPP and Maths 🔭🪐 7th - 11th July 2025 ☀️ #NAM2025
https://linktr.ee/NAM_2025
StudyAstronomy.com @studyastronomy.bsky.social Provider of online distance learning Astronomy Courses since the 1990s. Study University credit-bearing Astronomy Courses at your own pace and slowly build your studies into a full undergraduate degree in Astronomy. 
George Takei @georgetakei.bsky.social Husband, Actor, Activist, Uncle George to the Internet 🖖
Science Made Simple @sciencemadesimple.bsky.social Inspiring the next generation of scientists and engineers through science shows for schools and festivals, and public engagement training for researchers, industry and exhibition staff.
Jonathan Pritchard @pritchardjr.bsky.social Bewildered vagabond and student of the stars. Professor of uncertain opinions. Radio cosmologist at MPIfR.
(Opinions mine, not employers)
Leonard Burtscher @ileo.de he; husband; father of 3; climate and energy policy Umweltinstitut München; astronomer with Astro4Earth and Uni Leiden; ADFC Garching
Astronomers for Planet Earth @a4e.org Astronomy students, educators, & scientists addressing the climate crisis from the astronomical perspective. Join the conversation with #Astro4Earth!
Science Communication Unit, UWE Bristol @scicommsuwe.bsky.social The Science Communication Unit at UWE is internationally renowned for its activities, engaging the public with science and training science communicators. https://www.uwe.ac.uk/research/centres-and-groups/scu
Pallab Ghosh @pallabg.bsky.social I am a science correspondent for BBC News. I post mostly about science, sometimes science journalism and very occasionally, Spurs. Please share any hot stories, ideas and opinions on all three and anything else currently inspiring you.
BIG - STEM Communicators Network, UK @big-stem-network.bsky.social The skills-sharing network for individuals involved in the communication of #STEM subjects #SciComm #PublicEngagement
www.big.uk.com
The Little Event - January
The BIG Event - July
Skills Days - Throughout the year
Home of the Best Demo competition
PCST Network @pcstnetwork.bsky.social The Network for the Public Communication of Science and Technology promotes discussion on the theory and practice of communicating science, and of public discourses about science and technology and their role in society. https://www.pcst.network/
Dr. SkySkull @drskyskull.bsky.social Professor of optics, blogger of physics, history, & pulp fiction. Generally tries to keep things light-hearted, in spite of *waves hands at everything* (he/him) Blocking doomerism on sight.
blog: https://skullsinthestars.com/
Andrew Steele @statto.bsky.social Ageing biologist (aren’t we all?)
Author of https://ageless.link/
Presenter of https://www.youtube.com/DrAndrewSteele
Founder of @thelongevityinitiative.org
Department of Physics at the University of Oxford @oxfordphysics.bsky.social We work to develop, nurture and promote a physics community. Visit https://linktr.ee/PhysicsOxford for events, news and to learn more about the research taking place in our Department.
Dr Gemma Harper OBE @jncc-ceo.bsky.social CEO, JNCC - UK’s statutory advisor on nature | Award-winning Leader | ENDS Power List 2025 | Mentor of the Year 2025 | Non-Executive Director | Trustee | Keynote Speaker | On a mission for nature 💚
www.jncc.gov.uk
Science Ceilidh @scienceceilidh.bsky.social Supporting Knowledge & Cultural Democracy in Scotland
Host (1) the Community Knowledge Matters Network supporting community-led research (2) Curiosity In Action exploring youthwork, STEM and impact (3) the Culture & Wellbeing Community Network Scotland
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
Royal Astronomical Society @royalastrosoc.bsky.social www.ras.ac.uk
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
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
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
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
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.
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.
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. 
Tara Murphy @taramurphy.bsky.social Professor and Head of School of Physics at the University of Sydney. Radio astronomer looking for transients and gravitational wave events. OzGrav CI. Teaching physics and the apocalypse. https://taramurphy.github.io
Views expressed here are my own :)
@planetgreaves.bsky.social @planetgreaves.bsky.social Planet Venus scientist, creative, astronomer.
Steve Jones @profstevenjones.bsky.social Professor of #HigherEd, UoM, UK
Views own
#PFHEA
Duncan Yellowlees @dyellowlees.bsky.social Academic Research talks don't have to be shit!
✨ Researcher trainer
✨ Opinions about research culture
✨ Maker and fan of anything with dragons
Supporting phd's/ecrs/academics to do better more engaged and effective presentations
| He/Him
Margaret Harris @drmlharris.bsky.social Award-winning science journalist at Physics World magazine @physicsworld.bsky.social. Also available as @DrMLHarris@mastodon.social. All views on science, politics, history, nonsense, etc. my own.
James Brown @jcwbrown.bsky.social Science, Festivals, and Science Festivals
Head of Festivals at British Science Association and Director of the British Science Festival
.
Can ride a bike. Likes a good film.
(he/him/his)
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.
Rebecca Charbonneau @rebeccacharbon.bsky.social Historian of Science at The American Institute of Physics. Adjunct Asst Scientist at the National Radio Astronomy Observatory, Research Fellow at the SETI Institute. Author of Mixed Signals: Alien Communication Across the Iron Curtain.
Dr. Dawn Wiseman @sciencedawn.bsky.social Reluctant Department Chair. Abenaki Territory. Finds joy in learning through teaching and research alongside community - usually in relation to science or STEM education. Lately stuck filling in forms.
John O’Donoghue @drjohnodonoghue.bsky.social Educator, Scientist & Author at Trinity College Dublin (TCD) | Do you like movies and TV AND science? Try my book https://books.rsc.org/books/monograph/2272/Onscreen-ChemistryThe-Portrayal-of-Chemical | Views my own
James Romero @jamesromero.bsky.social Public Engagement Manager Imperial College London - #ImperialLates and #sciart 'Great Exhibition Road Festival' organiser. Also writes about planets and geology and other stuff. #Scicomm + music geek.
https://bsky.app/profile/jamesromero.bsky.social
The Oxford Nature Network @biodivoxford.bsky.social The Oxford Nature Network is a network of researchers & practitioners in & around the University working on biodiversity. www.nature.ox.ac.uk/
Our talks in person & online: https://bookwhen.com/oxfordbiodiversitynetwork
Paul Mirel @paulmirel.bsky.social Instrument Systems Engineer. Remote Sensing of Earth systems. Enabler of science by anyone curious about the world. Ally. Feminist. Wearer of respirators, wary of COVID. Evidence-based is best.
"Facts are useful in emergencies."-- The Talking Heads
Donal Brannigan @brannigand.bsky.social Engineer. Interested in Science, Technology and History.
From The Midlands but now Up North.
Was once startled by a cabbage.
Rowan Hooper @rowhoop.bsky.social Journalist and podcast host @newscientist.com. Former Tokyoite. Books: SUPERHUMAN (2018), HOW TO SPEND A TRILLION DOLLARS (2021), TOGETHERNESS (2026). すごい!
New Humanist @newhumanist.bsky.social Free thinking in an age of extremes. Follow for independent journalism on ideas, culture, politics and science. Published since 1885.
www.newhumanist.org.uk
Mitch Benn @mitchbenn.bsky.social Gilbert & Sullivan’s DRACULA
24th/25th October, Circle & Star Theatre Hampstead
https://www.tickettailor.com/events/circleandstar/2409942
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.
Alasdair Allan @alasdairallan.com Scientist, author, hacker, maker, and journalist. Writes, speaks, and builds. An accidental privacy advocate.
Will Gater @willgater.bsky.social Astronomer, author, astrophotographer. Former science journalist now working in the UK space sector to promote research, exploration & innovation.
willgater.com
Brian Malow @sciencecomedian.bsky.social Science comedian, producer, speaker, human
ProfBrianCox @profbriancox.bsky.social Professor of Particle Physics at The University of Manchester and Royal Society Professor for Public Engagement in Science
David Bradley @sciencebase.com Award-winning science & nature writer and wildlife photographer, focusing on birds, moths & butterflies and the science of the natural world.
More about my writing, photography, music, and community projects: sciencebase.com
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
Galaxy Zoo @galaxyzoo.org Help scientists understand how galaxies evolve in the Universe at galaxyzoo.org - we've classified millions of galaxies since 2007 and we are still going.
Glenn @zippyg2.bsky.social Originally from Detroit, now living in Baltimore. Erstwhile blues musician and DJ. Occasional social media foodie posts at #gourmandglenn. Back of the pack slow runner. Bullying survivor.
Mark Zaugg @zarquil.bsky.social e.g. I eat #AlbertaGrassYak and spoil dogs, usually with #AlbertaGrassYak. Adding new social media tabs each and every day. 
CatherineQ @catherineq.bsky.social Astronomer, science communicator, over-thinker extraordinaire. @AucklandUni space person @AucklandSpace. Autoimmune illness. 🇳🇿🇺🇸
Physics World @physicsworld.bsky.social News, views and information for the global physics community. physicsworld.com
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
Jen Gupta @jengupta.bsky.social Professional Space Nerd. Emo kid at heart. Expect astronomy, physics, science, sci-fi, outreach, public engagement, dogs, parenting, emo, pop-punk & general geekiness. Own views. She/her.
Robert Massey @robertmassey.bsky.social Dad, Deputy Director RAS and Honorary Visiting Professor Sussex University. All views my own. Makes 'good' trouble.
David Ault | Voice actor and astronomy presenter @davidault.co.uk Voice acting since 2005, embracing being called a 'veteran'...
NoSleep, Shadows at the Door and many more.
www.davidault.co.uk
https://linktr.ee/thedavidault
Freya Blekman @freyablekman.bsky.social Particle physicist at @CMSExperiment at @CERN - Lead Scientist DESY & Professor of Physics University of Hamburg - World citizen ➡🇳🇱🇺🇸 🇬🇧🇨🇭🇧🇪🇩🇪
Posts: #physics #SciComm + academia/tech stuff + my opinions + summaries of #CMSpapers
Tom Barclay @tbarc.bsky.social Scientist/Astronomer 🌟🌎☄️ | I work at NASA designing/building/testing space telescopes | I like punk rock and skiing
Tim Minchin @timminchin.bsky.social Songwriter singer pianist actor writer comedian producer speaker poet wanker reader runner worrier.
https://linktr.ee/timminchin
Posts on this account are posted for me by my webfairy, Shell🧚♀️
Peter Scandrett @proogs.bsky.social Stage lighting guy. Likes puns, technical jiggerypokery, sciencey stuff, good friendship and conversations that engage the brain. Cycles a bit. (he/him)
Dr Libby Jones @anywaythewind.bsky.social Infrared Astronomer 🔭 - space dust and stars in local galaxies.
Webb Fellow @ UK Astronomy Technology Centre
Love sports, history, 🐶 and UK politics.
Met Office - weather and climate @metoffice.gov.uk Official UK Met Office account. Get the weather in your hand with our app: http://linktr.ee/MOContent
André van Es #FBPE @andrevanes.bsky.social Anti-fascist
Project Engineer in Radio Astronomy.
No DM
Andrew Pontzen @apontzen.bsky.social Prof and director of the Institute for Computational Cosmology, Durham University. Author of THE UNIVERSE IN A BOX http://pontzen.uk/book
Geoff Notkin @geoffnotkin.bsky.social Emmy-winning host of TV's "Meteorite Men" and "STEM Journals," film producer, author, columnist, paleontologist, rock & fossil vendor, meteorite specialist, adventurer, TEDx speaker, EdFringe performer, former enfant terrible, and Asteroid 132904 🌌
Bill Keel @ngc3314.bsky.social Astronomer, husband, father, staff of cats, sometime trombonist
★ govert schilling @govertschilling.nl astronomy writer (de volkskrant, sky & telescope, sky at night magazine) ★ book author (almost 100 titles) ★ asteroid 10986 ★ amersfoort, the netherlands ★ eclipse chaser ★ atlas lover ★ partner, father, grandfather ★ www.govertschilling.nl
Matt Parker @standupmaths.bsky.social That maths guy from the internet.
Marcus Chown @marcuschown.bsky.social Writer. Books include A Crack in Everything, Breakthrough, The Ascent of Gravity, Infinity in the Palm of Your Hand, Quantum Theory Cannot Hurt You & Solar System for iPad. See www.marcuschown.com
IAU-OAD @astro4dev.bsky.social #Astronomy for positive developmental change. The Office of Astronomy for Development is a joint project of the International Astronomical Union and the South African National Research Foundation with the support of the Dept of Science and Innovation.
Prof. Abel Méndez @profabelmendez.bsky.social Planetary Astrobiologist and Director of the
@PlanetaryHabLab. http://astrodon.social/@profabelmendez #exoplanets #astrobiology #habitability
Julian Onions @julianonions.bsky.social Astronomer, programmer, and some other things.
Josh Peek @jegpeek.bsky.social 
Peter Edmonds @peterdedmonds.bsky.social Australian-American husband, father, professional nerd, astronomy communicator, dog spoiler, cricket fan. Opinions mine. He/him. 
Dr Rebecca Wragg Sykes @lemoustier.bsky.social Archaeologist, word-witcher, scicomm, consultancy
📚 KINDRED: Neanderthal Life, Love, Death & Art
🖋️ MATRIARCHA: Prehistory Re-imagined
🏛️ Honorary Researcher U. Cambridge & U. Liverpool
1/4 @trowelblazers.bsky.social
Rep: PEW Literary
Marco Langbroek @marcolangbroek.bsky.social Lecturer in optical Space Situational Awareness at Delft Technical University, faculty of Aerospace. Spy sats, missiles, meteorites, asteroids. Asteroid (183294). Lapsed Archaeologist (PhD). Rowing. CFS. Opinions my own.
blog: http://sattrackcam.blogspot.c
RNIB @rnib.bsky.social We’re the Royal National Institute of Blind People.
Profile pic: Our logo, bold black capital letters spelling RNIB, with a bold pink underline.
Cheshire East Countryside Ranger Service @cecrangers.bsky.social We develop, enhance and protect the countryside and urban sites within Cheshire East, while promoting the use of the Council’s outdoor recreational facilities. Find out more cheshireeast.gov.uk/rangers
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
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