Mayor Zohran Kwame Mamdani @mayor.nyc.gov Fighting every day to deliver a city that working New Yorkers can actually afford. Mayor of New York City.
Jonathan Pritchard @jkpritch.bsky.social My lab at Stanford studies human population genetics and complex traits.
James Bullock @jbprime.bsky.social Dean @dornsife.usc.edu
SUE the T. rex 🦖 @suethetrex.bsky.social That’s Specimen FMNH PR 2081 to you. they/them
EL PAÍS Chile @elpaischile.bsky.social Contamos un país al mundo y el mundo a un país.
EL PAÍS: https://elpais.com/chile/
David G Haskell @dghaskell.bsky.social Writer, biologist
🌻How Flowers Made our World, now in bookstores!
Sounds Wild and Broken
13 Ways to Smell a Tree
The Songs of Trees
The Forest Unseen
La Tercera @latercera.com Perfil oficial del diario La Tercera en Bluesky.
🗞️💻📱 https://latercera.com 
Random three-body problem @threebodybot.bsky.social Random initial conditions: M between 0.1 & 150 solar masses | Speed less than 10 km/s | Positions in a 50x50 AU box | code and more info at https://github.com/kirklong/ThreeBodyBot
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
🔭☕️🎤
Judy Schmidt @geckzilla.bsky.social Galactic Janitorial Services
Hourly Cosmos @hourlycosmos.bsky.social Photo sharing bot for planetary and deep space images.
Run by @kevinmgill.bsky.social
Content providers added with permission.
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
Paul Byrne @theplanetaryguy.com Associate Professor of Earth, Environmental, and Planetary Science at WashU • NASA Planetary Data System Geosciences Node Director • Explorers Club EC50 • eeps.washu.edu/people/paul-byrne • he/him
George Takei @georgetakei.bsky.social Husband, Actor, Activist, Uncle George to the Internet 🖖
Carl Rodriguez @carlrodriguez.bsky.social Professor of astrophysics at UNC, studying colliding black holes, swarming stars, and other things that go bump in the night. Big fan of transit, biking, climbing, Durham NC, he/him
dynamics.unc.edu
Lichess @lichess.org https://lichess.org The free chess server. No paywall, no tracking, no ads. Just the good stuff. User support requests should be directed to https://lichess.org/contact
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/
Andrew Jaffe @defjaf.bsky.social Astrophysics, cosmology, Bayesian inference, parenthood, politics, rock ’n’ roll, & more. Professor at Imperial College. andrewjaffe.net He/him/his
The Random Universe—available now!
https://yalebooks.yale.edu/book/9780300250503/the-random-universe/
Kapteyn Astronomical Institute @kapteynastro.bsky.social Bluesky account of the Kapteyn Astronomical Institute, University of Groningen, the Netherlands
Chris Gug @gugunderwater.bsky.social Pro underwater photographer and filmmaker. Ocean art gallery📍Lauderdale by the Sea, FL
Chess.com @chess.com The world's largest chess website.
With over 180 million players, you'll always find a game! 💚
Get the app: chess.com/play/apps
Republicans Against Trumpism @rpsagainsttrump.bsky.social Pro-democracy conservatives Republicans fighting Trump & Trumpism.
Join our growing community on Substack: https://open.substack.com/pub/republicansagainsttrumpism/p/im-his-lawyer?r=9qjst&utm_medium=ios
US National Gemini Office @usngo.bsky.social The US NGO at NSF NOIRLab supports Gemini Observatory
users in the stages of the astronomical observing cycle, from proposal to data reduction. Visit our website at https://noirlab.edu/science/programs/csdc/usngo.
ErrantScience @errantscience.com An account full of daily silly science cartoons
Drawn by @drmceep.bsky.social
Kevin Mitchell @wiringthebrain.bsky.social Neurogeneticist interested in the relations between genes, brains, and minds. Author of INNATE (2018) and FREE AGENTS (2023)
LIGO Scientific Collaboration @ligo.org Official account of the LIGO Scientific Collaboration. We detect gravitational waves!
Email: questions@ligo.org
Universiteit Leiden @unileiden.bsky.social Officieel Bluesky account van de Universiteit Leiden. Over wetenschap, opleidingen, evenementen en studentenleven. http://universiteitleiden.nl
NBA @nba.com The 2026-27 NBA season tips off Tuesday, Oct. 20 on NBC and Peacock! 🏀 3:00pm/et: Celtics/Pistons 🏀 7:00pm/et: 76ers/Knicks 🏀 9:30pm/et: Thunder/Spurs
The official account for the NBA
SMBC Comics @smbccomics.bsky.social Official account of Saturday Morning Breakfast Cereal created by
@zachweinersmith.bsky.social.
Home of the ongoing webcomic SMBC, A City on Mars, and of little books featuring large concepts abridged beyond the point of usefulness.
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 🧪🔭🚀🛰️☄️
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
Alexandre Adler @bachpropagate.bsky.social Postdoc at UC Berkeley and LBNL working on @simonsobservatory.org . I might work on the Cosmic Microwave Background, but my puns are never reheated.
ESA Technology @technology.esa.int Follow the latest news, developments and new technologies from the European Space Agency's R&D Directorate
ESA Operations @operations.esa.int From Earth orbit to deep space: sharing the excitement of real-time mission operations at the European Space Agency. Home for ESA's teams working on Planetary Defence, Space Weather, Clean Space & Space Debris.
esa.int/Operations
esa.int/Space_Safety
ESA Earth Observation @esaearth.esa.int @esa.int #EarthObservation: Taking the pulse of our planet from space.
Please see our Privacy Notice: http://esa.int/connectwithus
We share pictures and news on our planet as seen from space.
ESA Exploration @exploration.esa.int Sharing news on Europe's human and robotic exploration, from astronaut training to the next giant leap to the Moon and Mars.
AAS Press Office @press.aas.org Astronomy news curated by the Press Office of the American Astronomical Society. Note: Posting is not endorsing, only informing. aas.org/press Header Image: https://shorturl.at/vb7A1
Ahorrando Clickbaits @ahorrandoclick1.bsky.social El cansino de Twitter, ahora en Bluesky
Radio ADN @radioadn.bsky.social Actualidad, Deportes y Noticias. Emisora miembro de
PRISA Media.
.
📱+56977727572
📻 https://adnradio.cl
Erin Kado-Fong @kadofong.bsky.social YCAA prize fellow at Yale. PhD from Princeton; headed to Stanford in 2025 as a Kavli fellow.
I use large surveys of dwarf galaxies to disentangle the roles that star formation, stellar pop. assembly, and DM structure play in governing galaxy evolution.
Robert Massey @robertmassey.bsky.social Dad, Deputy Director RAS and Honorary Visiting Professor Sussex University. All views my own. Makes 'good' trouble.
Vagabundo Ilustrado @vagoilustrado.bsky.social Otoñista, Yournalista, analista y maestro tierra, entre otras tantas cosas. Amo escribir, leer, cantar y los puntos suspensivos...
El Mundo Today @elmundotoday.com La actualidad del mañana.
ArtButMakeItSports @artbutmakeitsports.bsky.social I turn Art into Sports (and vice versa) | NO AI USED | “Everything I didn't know I needed" - follower testimonial
Nicolas Tessore @ntessore.bsky.social cosmology and spherical functions,
“another gravitational lensing expert” – Daily Mail
DESI Survey @desisurvey.bsky.social The DESI Survey will measure the properties of Dark Energy using a survey of 30+ million galaxy redshifts.
Grant Tremblay @granttremblay.com Astrophysicist at the Center for Astrophysics | Senior Vice President, American Astronomical Society
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
Joe Zuntz @joezuntz.bsky.social Professor of Cosmology at the University of Edinburgh.
David W Hogg @hogg.bsky.social Astronomer, physicist, statistician, data analyst, open scientist. (Totally not at all the other David Hogg). I live on Lenape land.
CosmicPinot @cosmicpinot.bsky.social Brian P. Schmidt: Astronomer at Mt Stromlo Observatory, Vigneron and Winemaker Maipenrai, Vice Chancellor Australian National University, Nobel Laureate Physics
The Royal Society @royalsociety.org The Royal Society is a Fellowship of many of the world's most eminent scientists and is the oldest scientific academy in continuous existence.
https://royalsociety.org/
Viviana Acquaviva @venividivivi.bsky.social Astrophysicist turned Climate Scientist | AI for Science | Professor of Physics at @cuny.bsky.social; happy camper at @leapstc.bsky.social | Author, ML for Physics and Astronomy: https://shorturl.at/VJ9k9 | Lover of puns, data, good people, and unfinished 
ESA Space Science @science.esa.int Keeping you posted on space science activities from the European Space Agency.
Web: http://www.esa.int/science
Privacy Notice: esa.int/connectwithus
#astronomy #space #science
European Space Agency @esa.int Elevating the future of Europe through space.
Please see our Privacy Notice: https://esa.int/connectwithus
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
Atacama Cosmology Telescope y Simons Observatory en Español @act-simonsobs-es.bsky.social Cuenta oficial conjunta del Telescopio Cosmológico de Atacama (ACT) y su sucesor, el Observatorio Simons, ¡en español!
Diario-Radio UChile @uchileradio.bot.altgr.xyz Radio Universidad de Chile. La radio que piensa.
🔸Esta cuenta es un bot🤖 --de los buenos-- que replica los posts de la cuenta uchileradio@birdsite🔸
[bridged from https://lile.cl/@uchileradio on the fediverse by https://fed.brid.gy/ ]
El Mostrador @elmostrador.bsky.social El primer medio digital de Chile
https://whatsapp.com/channel/0029Va4vkTF0bIdk37Y0cM0r
The Clinic @theclinic.cl Política, negocios, ciudad, tendencias y tiempo libre.
Entender es todo en theclinic.cl 💻📱
God @thegodshow.com Creator of the Universe.
thegodshow.com
https://youtube.com/@thegodshowlive
Sociedad Española de Astronomía @sea-astronomia.bsky.social 
Atacama Cosmology Telescope @act-pol.bsky.social Investigating the structure and evolution of the universe with the six-meter telescope which observed from 5190 meters elevation on Cerro Toco in northern Chile
Jo Dunkley @jdunkley.bsky.social Professor of Physics and Astrophysics at Princeton. Author of Our Universe: An Astronomer's Guide. She/her.
Mike Niemack @michaelniemack.bsky.social Father, Physics and Astronomy Professor at Cornell, Cosmologist, Astrophysicist, Snowboarder, Outdoor enthusiast, Mentor, Ally, Stargazer ✨
Sean D. Johnson @seanjohnson.bsky.social Extragalactic astronomer; LSA Collegiate Fellow & Assistant Professor at @michiganastro. Dog lover. Pronouns: 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.
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
Bernardita Ried Guachalla @bernarditaried.bsky.social 🌲 PhD Astrophysics student at Stanford University with a Fulbright scholarship
🎓 MSc in Physics Universidad de Chile
🔭 NOIRLab ambassador
🖤 Observational Cosmology
Sometimes u'll find Spanish here 🇨🇱
Matt Hilton @matthilton.bsky.social Astrophysics professor at the University of the Witwatersrand, Johannesburg
Nicholas A. Christakis @nachristakis.bsky.social Sterling Professor of Social and Natural Science at Yale University. Sociologist. Network Scientist. Physician. Author of Apollo's Arrow; Blueprint; Connected; and Death Foretold. Director of the Human Nature Lab: https://humannaturelab.net
Event Horizon Telescope @ehtelescope.bsky.social We are the Event Horizon Telescope: a global collaboration that captured the first-ever image of a black hole using a virtual Earth-sized telescope.
Instagram, Facebook, Twitter, Mastodon: ehtelescope
eventhorizontelescope.org- M Michael Zingale @michaelzingale.bsky.social computational astrophysicist
open source tool developer
professor
blower upper of stars
can recite π to 2 decimal places from memory
star wars fan
coffee aficionado
https://zingale.github.io
Gaia Sky @gaiasky.bsky.social Gaia Sky is a 3D Universe desktop and VR application to bring Gaia data to the masses, open source, libre.
Simons Observatory @simonsobservatory.org Figuring out some of the mysteries of the Universe from Chile at simonsobservatory.org
The Astrosky Ecosystem @astrosky.eco We're building new social media tools for astronomers and astronomy enthusiasts online - from feeds to account hosting.
Website: https://astrosky.eco | GitHub: https://github.com/the-astrosky-ecosystem
Account managed by @emily.space
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
🏳️🌈 🏳️⚧️ (she/her), Ⓥ
Website: https://emily.space
GitHub: https://github.com/emilyhunt
Andrea Botteon @andreabotteon.bsky.social Astrophysicist at INAF-IRA. Previously at UniBologna and UniLeiden. Mainly dealing with colliding galaxy clusters, merger shocks and their radio outcome.
Eve Vavagiakis @evevavagiakis.bsky.social Assistant Professor of Physics at Duke. Cosmology and astrophysics with ACT, CCAT, and the Simons Observatory.
Author of Meet the Universe books, MIT Kids Press
Cornell alum x3 🐻 Often outside 🏃♀️🚵🏻♀️🥾
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. 
Ned Wright @mapping3k.bsky.social UCLA astronomer working on space CMB and IR. On the COBE, WMAP, SIRTF and WISE missions. Asteroid (241527). See my cosmology tutorial at https://www.astro.ucla.edu/~wright/cosmolog.htm
Jackie Wattles @jackiewattles.bsky.social Space Reporter @ CNN
Signal: jackiecnn.04
NASA Webb Telescope @nasawebb.extwitter.link ⚠️ MIRROR OF twitter.com/NASAWebb
⚠️ If you own the original account and want to claim this, please contact @twttr-mirrors.bsky.social
Gravity Grinch @gravitygrinch.bsky.social observational cosmologist -- the particle horizon is the limit!
https://thegravitygrinch.blogspot.com
Andrey Kravtsov @grumpy1.bsky.social 
John ZuHone @jzuhone.bsky.social Father, husband, Anglican Christian. Astrophysicist at the Center for Astrophysics | Harvard & Smithsonian; works for Chandra, researches galaxy clusters, develops in Python
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.
The Kavli Foundation @kavlifoundation.org Official Bluesky account of The Kavli Foundation.
Advancing science for the benefit of humanity.🔬
kavlifoundation.org
Simons Foundation @simonsfoundation.org Advancing the frontiers of basic science through grantmaking, research and public engagement. Sign up for our newsletter: simonsfoundation.org/newsletter
Luca Di Mascolo 🟥 @lucadimascolo.bsky.social SZ-ing the Universe from the Kapteyn Institute 📡
Fourier-space aficionado, dad of a sourdough starter, antifa
Proud co-creator of herakoi 👋🎶
https://lucadimascolo.github.io/
Tony Mroczkowski @tonymroczkowski.bsky.social astronomer, submm instrument scientist, AtLAST, ALMA, ACT, GBT/MUSTANG-2, Simons Observatory, CMB-S4
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
The Open Journal of Astrophysics @ojastro.bsky.social A peer-reviewed Diamond Open-Access Astrophysics journal using an arXiv overlay. This community-run service is provided entirely free for authors and readers.
https://astro.theoj.org/
Atacama Large Aperture Submillimeter Telescope @atlastdesign.bsky.social Development study for a next-generation 50-meter aperture single-dish sub-millimeter astronomical facility powered by renewable energy. Website: atlast.uio.no. 
Randall Munroe @xkcd.com 
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
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 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
Max-Planck-Institut für Astronomie @mpi-astro.bsky.social Astronomical research institute in Heidelberg, Germany / Astronomisches Forschungsinstitut in Heidelberg
Impressum: https://www.mpia.de/impressum
AAS Nova @aasnova.org Highlighting recent astronomy research from the American Astronomical Society's journals. Editors: Kerry Hensley & Susanna Kohler. Discover what's new in the universe at aasnova.org. Header image: https://bit.ly/4vPAvD