Bill McKibben @billmckibben.bsky.social Founder 350.org and Third Act, author The Crucial Years on substack https://billmckibben.substack.com/
Author of 21 books, beginning with The End of Nature
Quote Investigator @quoteinvestigator.com Authoritative quotation information. Book: Hemingway Didn't Say That. Website receives 4.5 million visitors/year.
https://quoteinvestigator.com/about/
Astronomy Picture of the Day @apoddaily.bsky.social Daily Astronomy Picture of the Day from NASA — stunning images of our universe with context and commentary. Not affiliated with NASA.
René Walter @rawx.bsky.social i learned more from a three minute record than i ever learned from a large language model.
Meme Magic / SocMed Psy / AI / Climate / Ex-Nerdcore.de
http://goodinternet.substack.com
http://goodmusic.substack.com
https://sigmoid.social/@rawx
Suzanne Aigrain @airbornegrain.bsky.social Discovering and understanding planets and their host stars. Watch my TEDx talk: https://t.ly/sk2wB
EMILY WILSON @emilyrcwilson.bsky.social https://emily613.substack.com/
Holden Thorp @holdenthorp.bsky.social Editor-in-Chief of Science and Professor of Chemistry and Medicine at George Washington University. Opinions not those of AAAS. https://holdenthorp.substack.com/about #ActuallyAutistic
@pppglobalhealth.bsky.social @pppglobalhealth.bsky.social 
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.
Tobias Wilson-Bates @phdhurtbrain.bsky.social Time Machines. Temporality. Ecology. Robots. Education. Associate Professor of 19th century British Literature. 
Israel Velazquez @israelvelazquez.bsky.social 🌌 Amateur Image Processor (Hubble, JWST)
🎧 DJ (Trance & Psytrance) | 🎮 Gamer (Ornlu)
🏛️ Stoicism reader | 🚴 Cyclist | 🇲🇽 Mex 🇲🇽
5 de asada!
Flickr: https://flic.kr/ps/44txtF
SciGrl @jyrscigrl.bsky.social Former museum professional, current librarian. Interested in pretty much anything!
Amid the Stars @amidthestarstours.com Astronomy educator and writer in Southern California.
I post space images with breakdowns, astronomy fun facts, and articles on various space topics.
Amid the Stars is a guided stargazing experience in the San Bernardino Mountains.
amidthestarstours.com
New York Focus @nysfocus.com New York Focus is a nonprofit newsroom investigating power in the Empire State.
Subscribe to our newsletter: http://nysfocus.com/newsletter
p.s @p-s-v.bsky.social 
SpaceAustralia.com @spaceaustralia.com Connecting and sharing news, people, projects, voices and science from Australia and NZ’s space communities. 📸 CSIRO.
www.spaceaustralia.com 
Adam Kovac @adamjkovac.bsky.social Breaking news reporter at Scientific American. Guitar nut. Opinions are mine and rarely shared with you folks, unless they're about hockey.
Got scoop tips? akovac.14 on Signal.
⭐ ᗰᗩᖇᛕ ᗩ. ǤᗩᖇᒪIᑕᛕ ⭐ @markgarlick.com 🔭 Astrophysics Ph.D
🍩 Illustration and animation in Blender
🪐 Space art and astronomical art specialist
✨ Fellow of International Association of Astronomical Artists
🦕 Dabbling in paleoart and scifi art
🚫 Porn/AI/NFT/MAGA = Block
🌐 linktr.ee/spaceboffin
Beth Popp Berman @epopppp.bsky.social Professor @ a large Midwestern U
Author of Thinking like an Economist, Creating the Market University
Trying to understand how ideas about economic value have shaped capitalism + its regulation, from the first Gilded Age to the second
Have more hair now
Philip Goff @philipgoff.bsky.social Philosophy Prof. Heretical Christian. Author of "Why? The Purpose of the Universe" & "Galileo's Error." "One of the most persuasive panpsychists" - Stephen Fry.
Alondra Nelson @alondra.bsky.social Scholar, author, policy advisor
Science, Technology, and Social Values Lab
https://www.ias.edu/stsv-lab
Books: The Future of Science is Civic, Auditing AI, The Social Life of DNA, Genetics & the Unsettled Past, Body & Soul, Technicolor
DarkSapiens @darksapiens.bsky.social Astrophysics, science communication, sci-fi, nerdery (he/him)
Astronomer at @cefca-oaj.bsky.social
https://linksta.cc/@darksapiens
Discontinued Foods! @discontinuedfoods.bsky.social Your home for all those culinary delights, anomalies, and misfires that live on only in our memories...Still slowly but surely migrating over the over 1,000 foods I covered on Twitter, so if you don't see a favorite here yet, stay tuned!
DSCOVR:EPIC @dscovr-epic.bot.country Pics from the Earth Polychromatic Camera on the DSCOVR spacecraft (unofficial). Formerly @dscovr_epic on twitter.
FAQ: https://russ.garrett.co.uk/bots/dscovr_epic/
Operator: @russ.garrett.co.uk
Jenny Hautmann @jennyhphoto.com 🚀 Spaceflight photographer and content manager for Supercluster
JennyHPhoto.com
David H. Montgomery @dhmontgomery.com Words, data, code. Senior data journalist with @today.yougov.com. Host of the French history podcast The Siècle (@thesiecle.com). 
Gene Tracy @genetracy.bsky.social Physicist, sci-fi fan, news junkie. Scribblings have appeared at Aeon, Lapham’s Q, and American Scientist. he/him. Author of The Icarus Question: Essays on Science, Technology, and the Search for Home in a Changing World. https://gene-tracy.com/
Chase Million @millionconcepts.com CEO of Million Concepts. Building software and data systems to reduce space mission risk, increase scientific return, and accelerate discovery.
Astronomer and planetary scientist. Software engineer. Project manager. Writer. Magician. Dog person.
Prof. Nicole Holliday @mixedlinguist.bsky.social Assoc. Prof of Linguistics at Berkeley. Language, identity & prosody, esp. in politics & human-computer interaction. Trivia person and marathoner. LA & the Bay. No one is illegal on stolen land. Views are my own.
https://nicolerholliday.wordpress.com
Asif Siddiqi @historyasif.bsky.social New Yorker. Historian of Science and Technology. Space. Music. Soviet History. Comics
Dakota Smith @weatherdak.bsky.social Digital Meteorologist at @CNN.com, Science Communicator, & Creator
Twitch partner, (sometimes) live at night: twitch.tv/weatherdak.
Sophia Mitchell @rocketyak.bsky.social PNW Adventurer | Former NASA Engineer | Nature lover | Musician | Baker | Probably knitting something
Pete Sikora @petesikora.bsky.social The climate crisis & inequality. Married, two kids. Lifelong NYCer, diner guy.
With nychange.bsky.social, directing climate/jobs campaigns 9 years. Previous: 10 yrs CWA D-1, 7 yrs NYPIRG. On climate only, my takes are NYCC “official”. 🇵🇸
Andrej Spiridonov @andrejpaleo.bsky.social Professor of paleontology and Earth systems at Vilnius University. My interests are: theoretical paleontology, evolution, geology, stratigraphy, philosophy of biology and geology, climate at scales great and small.
https://twitter.com/AndrejSpiridon4
Brandon Bishop @brandontbishop.bsky.social Seismologist, investigates the Andes and subduction zones, currently complexly affiliated with St. Louis University and looking for new projects.
Replies to my geoscience posts that include LLM content get your account blocked.
Planetary Crater Consortium @planetarycraters.bsky.social The PCC is a community organization of planetary scientists interested in impact cratering on solar system bodies (planets, dwarf planets, moons, asteroids, and/or comets), including observational, theoretical, experimental, and numerical modeling studies.
Jessica Price @delafina777.bsky.social Cranky lioness. You know me from Twitter. Cats, game design, Judaism, and very long threads. (She/her) Views and opinions do not reflect those of my employer.
Ned Raggett @nedraggett.bsky.social Hi! I write about music at various spots (@thequietus.com, @thewiremagazine.bsky.social, Shfl and my Patreon, also in the past @allmusic.com, @pitchfork.com, @bandcamp.com etc. etc.). Plus podcasting about #Tolkien with friends at @bythebywater.bsky.social
Dr. Tanya Samman @t-s-sci.bsky.social Scientist and communicator. Geoscientist/Palaeontologist. she/her. My views are my own.
Caltech IPAC @caltechipac.bsky.social IPAC at Caltech partners with NASA, NSF, JPL, and the worldwide research community to advance the exploration of our Universe. www.ipac.caltech.edu
@fsaundersamsci.bsky.social @fsaundersamsci.bsky.social 
Melina Thévenot🏳️⚧️ @melina-iras07572.bsky.social I was a volunteer of astronomical research. Sometimes I edit wikipedia articles and I create images with #JWST data.
German 🇩🇪
no genAI 🚫🤖
trans, chronic pain, mental illness
https://melinathevenot.carrd.co/
she/her
BWJones @bwjones.bsky.social Bryan William Jones
Neuroscientist
Vision Neuroscientist
Connectomics / VolumeEM
Photographer / #Leica
Professing at Pitt
In the data
bryanwjones.com
ORCID 0000-0001-5527-6643
Jure Atanackov @jureatanackov.bsky.social Storm chasing & weather photography on the sunny side of the Alps. Meteors, meteor showers & meteorites. Active tectonics and earthquake hazard. Views my own.
Martin Hajovsky @martinhajovsky.bsky.social Family, sports, science and sci fi in some order or another. Same name on all social media and in real life. “Shared pain is lessened, while shared joy is increased.” — Spider Robinson
Dr. Adeene Denton @spacewhalerider.com Planetary scientist, earth + space science historian, dancer/choreographer, part-time community radio DJ. (they/she) 🏳️🌈
adeenedenton.com
Bri Barbu @bribarbu.bsky.social science reporter @ Chemical & Engineering News | please talk to me about carbon-based molecules | she/her | views mine | @bribarbu.95 on signal
Space Sciences Laboratory @ucbssl.bsky.social The UC Berkeley Space Sciences Laboratory (SSL) designs, builds and operates high-return, low-cost NASA missions. Our engineers, scientists and staff support a wide range of space and ground-based projects. 👇
https://www.ssl.berkeley.edu/
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
Roger Freedman @rogerfreedman.bsky.social Physics educator at UC Santa Barbara, textbook author, and San Diego Comic-Con OG. he/him/his
John Hawks @johnhawks.net Paleoanthropologist | Chair and Professor of Anthropology, University of Wisconsin–Madison 🧪🏺💀https://www.johnhawks.net
Derek Newsome @derek.space Spaceflight Photographer
Fighting to keep the dream alive.
derek.space
derekspace.com
He/Him
Hope Jahren @realhopejahren.bsky.social The scientist formerly known as Lab Girl.
I write books: https://www.penguinrandomhouse.com/authors/2111914/hope-jahren/
Daniel and Kelly's Extraordinary Universe @dandkuniverse.bsky.social Scientists Daniel and Kelly cannot stop talking about our amazing, wonderful, weird Universe! Each episode is a fun, easy-to-understand, and in-depth explanation of topics in science. Produced by iHeart. http://www.danielandkelly.org/
#BruceSterling @bruces.bsky.social Author, journalist, editor and critic combining his time in Turin, Austin, Ibiza, Belgrade etc #BruceSterling
Observatoire de Paris - PSL @obs-paris-psl.bsky.social Etablissement public en charge de missions de recherche fondamentale et appliquée, d’enseignement supérieur et de partage des savoirs dans les disciplines liées aux sciences de l’Univers, à l’astronomie et à la métrologie du temps.
Rhiannon Udall @rhiannon-udall.bsky.social PhD student in the LIGO lab at Caltech, studying catalogs of gravitational wave events and how glitches affect them, (she/her) 🏳️⚧️
Om Sharan Salafia @omsalafia.bsky.social Researcher at INAF - OAB, Milan, Italy. Working on GRBs & EM counterparts to GW sources. Former musician. Inherently curious.
Tiffany Nichols, JD, PhD @tiffanynichols.bsky.social LSST-DA Catalyst Faculty Fellow
History of Astrophysics, Physics, and Science + Environmental History.
LISA Community @lisacommunity.bsky.social First gravitational wave observatory in space. 3 satellites flying in triangle formation connected by 2.5 million km laser beams. An ESA mission with international participation including from NASA. Launch in the 2030s.
Joe Giaime @giaime.net Professor, Physics and Astronomy (LSU), LIGO Livingston observatory head (Caltech). Content here is my personal take, not representing my organizations.
Laurence Datrier @asleepywanderer.bsky.social Astronomer, occasional artist, sometimes takes pictures
(she/her)
Les Guthman @lesguthman.bsky.social Documentary director & producer. Most recent “LIGO” & YouTube web series & e-book. Coming soon, “Squeezed Light” doc. Fmr Disney, NBC News, Annenberg Foundation & Peabody Award-winning VISIONS series on PBS. 🇺🇦🇺🇦🇺🇦
Rhiannon Silva @rhiannonsilva.bsky.social Astrophysicist. Currently working on my second PhD on gravitational waves from black holes, at the Gravity Exploration Institute, Cardiff University.
They/any 🏳️🌈
Dr. Sharan Banagiri (he/him) @geodesicvoyager.bsky.social Astrophysicist @monashastro.bsky.social | Previously @ Northwestern & UMN | తెలుగు | Gravitational waves | @LIGO | LISA
Decarbonization now ✊🏽
All opinions my own and do not represent past or present employers.
orcid : https://orcid.org/0000-0001-7852-7484
Teagan Clarke @astroteagan.bsky.social Postdoc | gravitational-wave astronomer | Princeton University | 💫 🏳️🌈 🇦🇺
Shane Larson @sciencejedi.bsky.social Physics professor, amateur astro, fountain pens, woodworker, Lego, aspiring guitar player, cat dad, father, [he/him] Posts & opinions are my own.
My Blog: writescience.wordpress.com
My Instructables: www.instructables.com/member/gravitino/instructables/
Andreas Freise @gwoptics.bsky.social Looking for gravitational waves, modelling light.
Photos are taken by me unless stated otherwise (provided under a CC BY-NC-SA 4.0 license).
LIGO Magazine @ligomagazine.bsky.social The LIGO Magazine is published twice a year by the LIGO Scientific Collaboration (@ligo.org). Read free online for gravitational-wave news, stories behind the science and more!
www.ligo.org/magazine
Einstein Telescope @einsteintelescope.bsky.social Official profile of the Einstein Telescope. The project "Preparatory Phase for the Einstein Telescope Gravitational Wave Observatory" has received funding from the EU’s Horizon Europe INFRADEV Programme under GA No 101079696
EGO and the Virgo Collaboration @egovirgo.bsky.social Virgo is a Gravitational Wave detector, hosted by the European Gravitational Observatory (EGO), near Pisa, Italy.
Physics Today @physicstoday.aip.org The world's most popular physics magazine.
physicstoday.aip.org
Mark Hannam @markdhannam.bsky.social Gravitational-wave astronomer. Author, physicist, philosopher. Revealer of truths, exposer of lies. Exemplar of humanity. Also rather modest. https://fictionalaether.substack.com/
Dan @danhoak.bsky.social Radio science at MIT Haystack Observatory. Formerly: x-rays with OSIRIS-REx, gravitational waves with LIGO, Fulbrighter in Pisa at EGO/Virgo. He/him.
@jorgepullin.bsky.social @jorgepullin.bsky.social Physicist, motorcyclist, bagpiper, marathon runner, blogger, open access editor.
David Burbach 🇺🇸 @dburbach.bsky.social Prof. National Security and International Relations. Space security, civil-military relations. Cats, science, photography for fun. Providence RI; Oregon at heart! Personal views ONLY; no govt resources used. Assoc Ed @TNSR.org
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
Jocelyn Read @jocelynread.bsky.social Neutron stars, gravitational waves, and nuclear astrophysics. Professor at CSUF, working with LIGO and Cosmic Explorer. Took my name as an instruction.
COmpton Spectrometer & Imager @cosi-explorer.bsky.social COSI (Compton Spectrometer and Imager) is a NASA Small Explorer satellite mission to study the gamma-ray sky planned for launch on a Falcon 9 rocket in 2027. cosi.ssl.berkeley.edu
Colette Delawalla, PhD @cdelawalla.bsky.social Founder & CEO of @standupforscience.net
Standupforscience.net substack.com/@sciencefightclub
PhD in Clinical Psychology
"Colette is brass knuckles...w/ spikes tipped in poison"
“Delusional broad”
"Lady Switchblade"
“Ditsy socialist liberal”
Max Kozlov @maxkozlov.bsky.social science reporter covering biomedical research at Nature | proudly Ukrainian 🇺🇦
maxkozlov.com
signal: mkozlov.01
Terra Hunting Experiment @terrahunting.bsky.social Using the HARPS3 spectrograph for a 10-year radial velocity survey to discover Earth-like planets around solar-like stars. https://www.terrahunting.org/ #exoplanets #astronomy #instrumentation
Dr. Or M. Bialik |📚|🔬|🌊|⚒️ @obialik.bsky.social Sediment, climate change, and impostor syndrome | Science and SFF for the win | Writing for a living and fun | Opinions are my own (or the characters' in my head).
Academic stuff: https://obialik.weebly.com
Non-academic writing: https://ombialik.weebly.com
Stephen Nuñez @socio-steve.bsky.social Director, Stratification Economics at The Roosevelt Institute/Roosevelt Forward
@rooseveltinstitute.org
Sociologist, Dad, Autistic person, Bathos-Enjoyer, elitist jerk
Taxes are what we pay for civilized society
Opinions are my own
Laura Cooper @transitionalform.bsky.social Postdoc investigating the plants of the past at the University of Edinburgh, plants can be rocks too!
depths of wikipedia @depthsofwikipedia.bsky.social hi i'm @annierau.bsky.social i love wikipedia! dm submissions if you want :-)
Sean D. Johnson @seanjohnson.bsky.social Extragalactic astronomer; LSA Collegiate Fellow & Assistant Professor at @michiganastro. Dog lover. Pronouns: he/him/his 🏳️🌈
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
China Space Watch @chinaspace.bsky.social China's space program has made remarkable strides in recent years, positioning itself as a major player in space exploration. Including Space Station Construction and Manned Missions. As well as Robotic Missions to The Moon's Far Side and Mars! 🚀🚩👨🏼🚀🌕🏳️🌈🏳️⚧️🕊️
Robert Macfarlane @robgmacfarlane.bsky.social Books: Is A River Alive? (May ‘25), Underland, The Lost Words, The Old Ways etc | Films: River, Mountain, Upstream | Music: The Moon Also Rises, Lost In The Cedar Wood, etc
Nature, climate, people.
Prof at Cambridge.
https://linktr.ee/robmacfarlane
jesse jarnow @bourgwick.bsky.social good ol' grateful deadcast co-host / @wfmu.bsky.social DJ / author of "wasn't that a time" (hachette, 2018), "heads" (hachette, 2016), "big day coming" (gotham, 2012) / jessejarnow.com / heads.social/@bourgwick
Helen Rosner @hels.bsky.social “Zizek if he was a woman and loved sandwiches”
New Yorker staff writer, dept. of mastication
It’s always Free Palestine 🍉
~daniel_barker~ @daniel-barker.bsky.social I like to think there's a little something for everyone here. There isn't, but I can think what I want. 
Daily Pareidolia @dailypareidolia.bsky.social
Pareidolia is the phenomenon where you see faces in inanimate objects, where there are in fact, no faces.
This account aims to post one daily, either from my personal collection of them, all photos posted taken by me, or by reposting from others.
Seven Machina Rasmussen @toomanyspectra.bsky.social humanoid astrobiologist 🌌 SFF author (largely oxygen by mass) 📚 transhumanist 🤖 star trek autism character 🖖 she/they 🏳️🌈 instructor @ Columbia ✒️ CLOUDY WITH A CHANCE OF STARSHIPS now availabile wherever books are sold 👀
sevenrasmussen.com
Cees Bassa @cbassa.bsky.social Astronomer at ASTRON in the Netherlands, working with the LOFAR low frequency radio telescope. 
Dr. Deep Anand @styrofoamplates.bsky.social some guy working on some telescope. views are my own and not those of my employer or the government or anyone else.
OrbitalFocus @orbitalfocus.bsky.social For those genuinely interested in the finer points of new launches & activities on orbit. Curated by Robert Christy.
www.OrbitalFocus.uk
Carolyn Porco @carolynporco.bsky.social Voyager & Cassini! AAS Carl Sagan Medal 2010. Asteroid Porco 7231. Inaugural NatGeo Eliza Scidmore Award. Living my best life.
If you like what you see here, signup for my newsletter on Substack!
https://carolynporco.substack.com/