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.
Doctoral Research Fellow at the Oslo Nuclear Project, University of Oslo. Defense policy, missile technology, and nuclear strategy.
Weekly analysis of missile tech, nuclear strategy, and European deterrence 👇
https://missilematters.substack.com/subscribe
Mark Dixon. Painter, food dabbler, working doing web stuff, living in Montreal, mandolin player, runner, skier, from NB.
www.markdixon.ca
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
Astronomy and physics professor, former Orbital Mechanic, and officially a Superhuman - cats, spaceflight, 日本語, gardening, and video games.
Get my art book 'Worlds Beyond Time!' https://linktr.ee/70sscifiart
Publishers Weekly says my "obvious love for the form animates the volume." And I'll animate again! I'll never stop animating volumes
A Canadian astrophysicist who likes to talk about space a whole bunch en franglais. she/her/elle
Associate Professor @polymtl.bsky.social — CFD methods, multiphase flows, cavitation, particles, acoustics and more. www.polycfd.com
Professor of Astronautics at University of Birmingham, UK, with interests in #SpaceDebris & #SpaceSustainability. Also a #pwME
Celebrating the First Launch Centennial - the 100th anniversary of the world’s first liquid-fueled rocket launch by Dr. Robert H. Goddard …and the dawn of the Space Age!
www.Thewondermission.org
Space: Exploration, Science, Launchers. Special focus on industry and European developments.
Exploration scientist, engineer, artist. Building things for space inspired by things in the sea, and things for the sea inspired by space. Discovered a few moons along the way.
Astronomer, planet hunter, Pluto killer, bear whisperer, finger-wrapped dad. Dangerous secularist. Foot soldier in the War on Cars. He/him.
mikebrown.caltech.edu
Space Industrialist, entrepreneur, engineer and “near-futurist” focused on the economic development of space.
Space reporter at @bloomberg.com covering NASA, commercial space, and the cosmos | Send tips: LGrush@bloomberg.net | Signal username: lorengrush.56 | Buy my book! https://www.simonandschuster.com/books/The-Six/Loren-Grush/9781982172817
Associate Prof & Director of MILES Lab at @mcgillu.ca
Interested in motivational support & motivational climate, riding my bike, and books
kristyarobinson.com
Blissfully on sabbatical 2025-26
Physicist at large. Speaker. Writer. Mono-instrumentalist.
orcid.org/0000-0003-4608-8397
Avatar: Bill Heterodyne, smiling & tipping his boater, by Phil Foglio.
Banner: Me, infinitely reflected in mirrors.
Engineer, Roboticist, Spacecraft Hacker. Associate Professor of Aeronautics and Astronautics at MIT
Fascinated by things very big, very small, and beyond the limits of the human senses. Founder of OpenMind: www.openmindmag.org Creator of the Invisible Universe column: https://invisibleuniverse.substack.com/
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
Scientist, Explorer, Innovator, ETH Prof, NASA’s head of Science 2016-2022
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
Space, Rockets, Astrophysics, Nukes, Politics
* ALL CAPS HEADLINES LIKE THIS ARE FROM THE ONION
Chilean physicist.
Posting mainly about history of physics.
Too many interesting things to learn, too few time.
Born at 316.91 ppm
Nuclear and aerospace engineer. Trying to make a better future for humanity
Opinions are my own. He/Him
News about Earth Observation. Author of http://satelliteobservation.net and http://therestlesstechnophile.com . Views my own.
I developed the software which was used to solve the problem of catching up with the first interstellar object to be discovered, 1I/'Oumuamua, Project Lyra. I am a researcher for the Initiative for Interstellar Studies (i4is).
Science, Space Exploration, & Energy Technology. Freethinker. For human liberty and the Western alliance.
Also the inventor of Three Player Chess.
CHNOPS in ferruginous saline. Multicellular aerobic chemoheterotroph; symbiont of photosynthetic autotrophs. Descendant of stardust; aspiring good ancestor. Senior Editor, Scientific American. Signal: @lee_billings.81
Interstellar Flight Experimental Research Group @mcgill.ca : Researching the technologies that will make our civilization multi-stellar.
https://interstellarflight.space/
Senior Space Editor, Ars Technica. Likes rockets.
Astrobiology.com - Exploring the living universe since 1996. Life Looks For Life. Vita quaerit vitae.
human person (she)
| cosmologist at Duke University
| member of @LSSTDESC @Roman
| did physics @XENONexperiment
| loves plots, coats, and The Wire
| opinions mine
I'm a theoretical physicist at Durham University
Physicist, professor, author of books about science for non-scientists. Longer-form stuff at https://chadorzel.substack.com/
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/
Space Educator based in Montréal.
Caltech/IPAC Planet Hunter | Chief Scientist, NASA Exoplanet Science Institute | @TEDFellow | Science consultant | General Nerd | My views are not the views of NASA | She/her
Writer/editor Centauri Dreams
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.
engineer, renegade polymath, guitarist, non-practicing rocket scientist living in Seattle. founded @blackpixel, which is no more. software engineering, ux, music, cats. He/him.
Accomplice.
Searching for life beyond Earth. MIT astrophysicist.
NASA JPL news media specialist. Topics include (not limited to): ☄️🛰️📡🪐🌕⚛️ Solar physics PhD. Science communicator, writer. Opinions are mine. he/him
IT/Cloud/SRE/PE, rockets & missiles, nukes not going bang, space, CS, ships. YIMBY & amateur transit geek. Part time adjunct @ miis.edu teaching Missiles & Missile Defense. I speak for myself only not $DAYJOB. V95.45XA I do #OSINT against nuclear missiles.
Planetary astronomer @UCNZ: envisioning worlds from here and elsewhere, in a dark & glorious sky. Rutherford Discovery Fellow & Assoc. Professor. Asteroid (10463). Pākehā; she
Mathematician, writer, Cornell professor. All cards on the table, face up, all the time. www.stevenstrogatz.com
Physicist, airburst specialist, planetary defender, & CSI Fellow. I'm critical of the Younger Dryas impact hypothesis (YDIH) which has strong links to global warming denial, creationism, & pseudoarchaeology. It relies on misinformation & fake peer review.
Senior Staff Writer, SpaceNews. Tips? Email jfoust@spacenews.com or contact on Signal: jfoust.58.
Cosmologist, science communicator, author, speaker, and longtime writer of Starts With A Bang.
Not the next Carl Sagan; the first Ethan Siegel.
Science writer and author of books including Bright Earth, The Music Instinct, Beyond Weird, How Life Works.
Planetary Astrobiologist and Director of the
@PlanetaryHabLab. http://astrodon.social/@profabelmendez #exoplanets #astrobiology #habitability
fluid mechanics, mathematical modelling, asymptotics, thin-film flow, evaporating droplets, rheology, and some orienteering
Professor Université de Montréal, Physics of Living Systems, Machine Learning, etc…
https://www.francoisresearch.org/
planetary scientist 🪐 science illustrator 🎨 trekkie 🖖 dog dad 🐶 Pasadena 🌹 views are my own 🏳️🌈 he/him
Barrister. Here for law stuff, puns, and food.
“Very Respected Science Person” -NBC News
🔴 Former science operations for NASA Mars missions
🛰️ Current space sector strategist & author advocating for Earth
🌎 Based in Ottawa but often found on a train
✨🇨🇦🏳️🌈✨
Astronomy, Exoplanets, Astrobiology, Cool Worlds Lab, Columbia University. Be kind to one another.
Interest in Space, Engineering & Photography.
Cantab Engineer with International Space Elevator Consortium (ISEC).
Member, Initiative for Interstellar Studies (i4iS)
Retired physicist after 40 years at Los Alamos. Plasma physics, fusion, hydrodynamics, dynamic materials.... Not to mention opera, modern rock, good food, and more. Now produces musical theater.
Space journalist and skywatcher. I'm the publisher of Universe Today (universetoday.com) and co-host of Astronomy Cast (astronomycast.com). YouTube: https://www.youtube.com/@frasercain
Director at Canadensys Aerospace Corp. Former Director General, Space
Exploration at the Canadian Space Agency. Still exploring.
🚀🛰️ Social media for space at spaceagenda.com and spaceside.eu | Co-founder of SpaceCommsAlliance.com | Faculty at ISUnet.edu | #DigitalNomad
🌍citizen 🇳🇱passport 🇬🇧resident 🇪🇪e-resident
Orbit simulations of planets, comets, asteroids and other interesting stuff. Amateur astronomer. BA: Physics & Astronomy, SFSU.
Astrobiologist, communicator of science, orator, musician, meditation guide, fan of sci-fi, singer of forgotten songs.
Lapsed academic. Now helping make forecasting free for everyone, everywhere by working on SocialPredict: https://github.com/openpredictionmarkets/socialpredict
Mainly personal stuff, reposts, links to things I find interesting. she/they
osnatkatz.com
Earth and planetary scientist, explorer and educator. Non-traditional academic. Former Mars rover scientist. Skier. Guitarist.
Montreal, Canada.
Spécialiste en missions spatiale / Space Mission Specialist
Director of The Research School of Physics at the Australian National University | Prof @PhysicsANU | High Pressure Science & Diamonds | AIP President 2019-20 | Dog lover | Enjoys new tech | opinions my own
spaceflight communicator, former Teslarati spaceflight editor
he/him
(twitter refugee @13ericralph)
Prof., astrobiology researcher, science communicator & book author (http://beinghumanbook.org / http://originsbook.com / http://the-knowledge.org)
Into bikes, nuclear energy, vegetables, coffee, scientific computing, & public radio. Currently a professor at UIUC NPRE . Former NE-1. (she/her)
National security space policy research analyst at the Aerospace Corporation Center for Space Policy and Strategy 🛰️ soon-to-be CU Boulder Aero Engineering M.S. 💫 Yale Astrophysics B.S. 🔭 posts are my own
Professor of ship hydrodynamics at TU Delft. I study flow physics, direct and data-driven modelling, & shape-changing vehicles. 🌊⛵ + 💻📈 + 🦑🤖
Retired space architect, technologist, celestial mechanic, inventor, and entrepreneur. Live in truth. Defeat autocrats, external or domestic.
Assistant Professor of Physics at Duke. Cosmology and astrophysics with ACT, CCAT, CMB-S4 and the Simons Observatory.
Author of Meet the Universe books, MIT Kids Press: “I’m a Photon” out May 2025!
Cornell alum x3 🐻 Often outside 🏃♀️🚵🏻♀️🥾
Academic jack-of-all-trades.
Plasma physics, nuclear fusion, open source, running, making stuff, occasionally silliness. He/Him.
Senior researcher at Uni Stuttgart, views are my own
Associated Professor of Physics at the University of Exeter.
Scientific visualizations (grouped under the hastag #PhysicsFactlet).
He/lui/on. All opinions are my own fault.
Heliophysicist | Head, Austrian Space Weather Office @aswogeosphere.bsky.social | GeoSphere Austria https://geosphere.at/en/topics/disaster-protection/space-weather |☀️💥💨🌍 | erc.europa.eu HELIO4CAST | http://helioforecast.space | he / him
Extragalactic observer (black holes, galaxies, galaxy clusters, stellar pops) that also dabbles in planetary astronomy. Really, basically a pixel pusher.
Author of a growing pile of books (Solidarity; The Age of Insecurity; Remake the World; Democracy May Not Exist, but We'll Miss it When It's Gone; The People's Platform), maker of documentaries, schemer with the Debt Collective, editing at Hammer & Hope.
Astrophysicist. Author of The Little Book of Aliens. Stuff shows up at The Atlantic, NYTimes, Big Think, etc. The Ramones, the Mets and lots of video games.
Economic data scientist and author. Currently @ No10, formerly ONS & Bank. Book on nuclear fusion, 'The Star Builders', out now with S&S/W&N. Views my own.
Website: www.aeturrell.com
A project of The Center For Scientific Integrity https://centerforscientificintegrity.org/
Daily newsletter http://eepurl.com/bNRlUn
Database http://retractiondatabase.org
Tips team@retractionwatch.com (better than @ replies)
