Harold Geller @AstroBioProf
GMU Associate Professor Emeritus; American U. Adjunct Professor; NASA/JPL Solar System Ambassador (volunteer). Opinions are my own. Links are not endorsements. physics.gmu.edu/~hgeller/ Fairfax, Virginia Joined February 2009-
Tweets54K
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"Dating the White Sands Footprints" by @BrianDunning see skeptoid.com/episodes/1004
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"Afghanistan earthquake: Impassable roads, inclement weather" See earthsky.org/earth/afghanis…
"Moon Phases And Visible Planets September 2025" See youtube.com/watch?v=ZzpvRJ…
"History's Weirdest Science Findings" by @BrianDunning ; see: skeptoid.com/episodes/1003
"The Wow! Signal: New analysis closes in on mysterious source" see earthsky.org/space/the-wow-…
"Not a mystery beast, just a dog" see sharonahill.com/not-a-mystery-…
"U.S. Department of Education’s Office for Civil Rights Finds George Mason University Has Violated Title VI" see ed.gov/about/news/pre…
"Don’t Believe the AI Hype" see academeblog.org/2025/08/20/don…
"Human evolution complexity revealed in new African fossils" See earthsky.org/earth/human-ev…
"A Feast of Feedback" by @BrianDunning ; see: skeptoid.com/episodes/1002
"Don't miss this week's morning planet parade!" see youtube.com/watch?v=XYy7nQ…
"Bigfoot remains a moneymaking hoax" See sharonahill.com/bigfoot-remain…
"The Drawbacks of Being a Department Head (And How to Minimize Them)" See chronicle.com/article/the-dr…
"'Bulls**t Index' Tracks AI Misinformation" see spectrum.ieee.org/ai-misinformat…
"Strange spiral in the night sky was a rocket fuel dump" See earthsky.org/space/strange-…
"Play Weather Memory Match!" See scijinks.gov/weather-memory…
"They’re Killing the Humanities On Purpose" see chronicle.com/article/theyre…
"No Earth-like atmosphere on TRAPPIST-1 d" see esa.int/Science_Explor…
"The Phantom Clown Panic" @BrianDunning See skeptoid.com/episodes/1001
Prof. Abel Méndez �... @ProfAbelMendez
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The SETI Institute @SETIInstitute
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Dr. Graham Lau @cosmobiologist
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John Gertz @AstroJgertz
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Gail💎 @gailpeakkk
72 Followers 1K Following Hawaii’s paradise but Im the kind of escape you’ll never recover from. DM me if youre ready to dive deep and feel FREE with no way back 🔥👇
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Dave Johnson @Davejohnson7853
949 Followers 2K Following I want to be the reason someone believes in kind persons, I'm blessing my first 500 followers with $50,000 each from my $298.3 million lottery winning.
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Tabby ❤️✊️�... @TabbySpence8
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Prof. Abel Méndez �... @ProfAbelMendez
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ARCHIVED NASA Exoplan... @NASAExoplanets
1.4M Followers 95 Following This account has been sunset. Follow us on @NASAUniverse for all future exoplanet updates.
Xavi Bros @Xavi_Bros
49K Followers 28K Following Amateur astronomer, Anysllum Observatory, AstroSabadell. Psychologist pursuing a PhD in psychiatry. Author of "En las playas de Sedna": https://t.co/qm7ybXXIDA
NASA JPL @NASAJPL
3.8M Followers 125 Following The Jet Propulsion Laboratory manages many of NASA's robotic missions exploring Earth, the solar system, and our universe. (Verification: https://t.co/iicDVgZd2m)
Astrobiology @astrobiology
36K Followers 3K Following Exploring The Living Universe. Life Looks For Life. Vita quaerit vitae.
ARCHIVED – NASA Ast... @NASAAstrobio
821K Followers 89 Following Studying the origin and evolution of life on Earth to inform the search for life elsewhere in the Universe. Follow @NASASolarSystem, @NASAMars, & @NASAUniverse
Charles Cockell @CharlesCockell
3K Followers 670 Following Astrobiologist | University of Edinburgh | space microbiology; life in extreme environments; space settlement | moths | views mine.
Alan Stern @AlanStern
40K Followers 2K Following Planetary Scientist. Flown Commercial Research Astronaut. Pilot. Author. Speaker. Dad. Explorer. Optimist. Not in that order.
Dr. Gregory Washingto... @GMUPres
5K Followers 521 Following President of @GeorgeMasonU, Virginia's largest and most diverse public university! #MasonNation
The SETI Institute @SETIInstitute
694K Followers 2K Following Our mission is to lead humanity's quest to understand the origins and prevalence of life & intelligence in the universe and share that knowledge. #notjustaliens
Dr. Tanya Harrison @tanyaofmars
52K Followers 10K Following Professional Martian 🔴 Former ops/science team @NASAPersevere @MarsCuriosity @MarsRovers & more 🌎 Now space industry strategist 🚀🌈🇨🇦
George Mason Universi... @GeorgeMasonU
35K Followers 892 Following The official account of George Mason University! #MasonNation 💚💛 -@MasonULife -@MasonAdmissions -@GMUPres -@MasonAlumni -@MasonAthletics
John M Powell @JohnMPowell1
35K Followers 19K Following Dad, President of JP Aerospace, pilot, spaceship, airship and submarine builder, accordion squeezer and violin squeaker .
Dr. Sian “Leo” Pr... @DrSianProctor
71K Followers 373 Following 👩🏾🚀 1st woman commercial spaceship pilot & only black woman mission pilot @inspiration4x, #SpacePoet #JEDIspace #Space2inspire #EarthLight #Space #Artist
Dr James O'Donoghue @physicsJ
188K Followers 1K Following Only at https://t.co/pjGi9R4wdu | Planetary scientist & award-winning science communicator. Fellow @uniofreading, formerly @NASA
Dr. Graham Lau @cosmobiologist
11K Followers 1K Following Astrobiologist & Science Communicator w/ @BlueMarbleSpace, Host of #AskAstrobio w/ @saganorg & @NASAAstrobio, Storyteller #astrobiology #meditation #futurism
National Radio Astron... @TheNRAO
46K Followers 639 Following The National Radio Astronomy Observatory is a facility of the National Science Foundation. Social media policy: https://t.co/c6wcVdrTYo
Planetary Science Ins... @planetarysci
5K Followers 245 Following PSI is a private nonprofit dedicated to studying the origin, characteristics, and evolution of Earth, our Solar System, and planetary systems around other stars
Marshall Julius @MarshallJulius
101K Followers 90K Following Nerd 🤓 Word Monkey 🐒 Obtainer of rare antiquities 🦕 Co-author of Rondo Award-winning #MastersOfMakeUpEffects 📖 New book coming Sep ‘25: #MakingMonsters 👹
Joseph Karpinski @jkarpin2
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Zach @zach0969
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Fermat's Library @fermatslibrary
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Saikat @_Saikat__Maity_
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Matthias Maurer @astro_matthias
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dark sky friends @chandi31216
344 Followers 4K Following Love stars, dark skies, quiet spaces - fighting light pollution & light trespass! ROLAN- smarter, responsible, more considerate ways for outside lighting.
Trygve Prestgard @TrygvePrestgard
344 Followers 514 Following Postdoctoral researcher at the @VUBrussel. Member of the @AMGC_FLUX_team. I'm also a comet and deep sky enthusiast! He/him.
Oliver D. Smith @oliveratlantis
1K Followers 1K Following Collector of rare books, trading cards, retro toys, bric-a-brac, and #VHS 📼 Interests incl. atmospheric optics, ufology, buried treasure, cryptobotany.
Deep Mind Thinkers @deepmindart
2K Followers 4K Following A daily dose of Knowledge and thoughts for boosting thinking and analyzing power....Kindly DM for credit or Video Removing. God bless all.
lj @galaxyquest2020
203 Followers 725 Following space and the universe, including the sun, the planet's, and physics
Physics In History @PhysInHistory
958K Followers 0 Following Photos from the history of physics | © with mentioned Archives. Shared for educational purposes. Einstein portrait © Ullsteinbild. Subscribe for curated papers.
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Faculti @FacultiNet
4K Followers 3K Following Go Beyond the Clips — Dive into 8,000+ Full-Length Expert Interviews, Data Visualizations, Case Law, Policy Insights, and more on https://t.co/pdEo2AWDy8
colin rainey @colinrainey2
503 Followers 5K Following wire haired sausage dogs are the answer. Proud to work in Renewables. Shoulder to Shoulder. #irfu Views my own.
Wolf Geppert @GeppertWolf
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Ed murray @edmurra56645660
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216 Followers 238 Following The California girl who changed her career path twice already. Ex-manager, ex-tutor. Writer ✍🏻, bookworm📚, enthusiast. My 📖 blog https://t.co/3tOh2ze2uE
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6K Followers 994 Following Gale®, part of Cengage Group, is a world leader in e-research and educational publishing for libraries, schools, and businesses.
François Diaz-Maurin... @francoisdm
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Elettra Sincrotrone T... @elettrasincro
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Andrew Fraknoi @AndrewFraknoi
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Twiggs Space Lab, LLC @TwiggsSpaceLab
761 Followers 4K Following Focused on inspiring future generations of engineers and scientists to make the world a better place through innovative research in space.
Fatima Akter @digital_fatima
1K Followers 2K Following Hey, I'm Fatima.I'm a #Freelancer.👩💻I'm work in #digitalmarketing & #smm.💻I expert do this work😍You can take help from me for any service.I will help you😊
Noah Karl🌏🌌🚀... @NoahKarl1
1K Followers 5K Following I am interested in astronomy, space travel, history, politics and philosophy. Part of Team Space. Sprecher https://t.co/r9cNk1kBrn
Natasha Latouf🍉 @nertushka
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Jorge Coppin-Massanet... @AstroCoppin
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Max Avery @realMaxAvery
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Julia Reed @JuliaReedWriter
842 Followers 806 Following Freelance writer at @CusWriting. Passionate about classical music and nature. #education #productivity #studytips #writingtips
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João S. Gallotti @CleanEnergyRock
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Jacques Berlinerblau @berlinerblau
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