Science Enthusiast 500
AstrobiologyNAI
NASA Astrobiology Institute: we study life in the Universe!1,022,102 followers | Follow
Buzz Aldrin
Astronaut, Apollo XI and Gemini 12; Doctorate from MIT in astronautics, married to Lois Aldrin for 21 years. Korean War veteran (fighter pilot of 66 missions).805,413 followers | Follow
Asteroid Watch
JPL's Near Earth Object Office coordinates NASA's efforts to detect, track & characterize potentially hazardous asteroids & comets that could approach Earth.713,603 followers | Follow
WIRED Science
Science, space, energy and robot sharks with lasers. Hosted by @betsymason and @alexismadrigal381,978 followers | Follow
William Shatner
Philanthropist, Actor, Producer, Father, Husband, and Grandfather299,190 followers | Follow
Adam Savage
I play a scientist on TV. Obsessive maker of things. Host of Mythbusters on the Discovery Channel.267,737 followers | Follow
National Geographic
Since 1888, we've traveled the Earth, sharing its amazing stories with each new generation. Official Twitter account of National Geographic.264,918 followers | Follow
Jodrell Bank
Home of the world's third-largest steerable radio telescope, and the MERLIN National Facility. Part of the University of Manchester.243,409 followers | Follow
Deepak Chopra
235,343 followers | Follow
Discovery Channel US
News from Discovery Channel U.S. PR. Press site at press.discovery.com.177,795 followers | Follow
New Scientist
New Scientist is the world's only science and technology weekly141,490 followers | Follow
Lonely Planet
Tweeting (& retweeting) the best in travel. 1. Follow us. 2. Tag your tweets with #lp 3. We read your posts 4. We re-tweet the best of them132,194 followers | Follow
Scientific American
Scientific American Magazine and online, over 150 years of science news85,494 followers | Follow
Science Channel
The official Science Channel Twitter feed. Features show information, network exclusives and breaking science & tech news.80,548 followers | Follow
NYTimes Science
Science, Enviornment, Space and Cosmos News From NYTimes.com/Science79,369 followers | Follow
Science News
Daily news of science advancements from physics to medicine. Published by Society for Science & the Public.67,523 followers | Follow
Science Friday
We make a science radio program heard on NPR and create science content for the web. Got ideas? Write us @scifri and tweet your questions during the show.61,123 followers | Follow
NatureNews
The latest science news from Nature, the international scientific journal60,250 followers | Follow
Neil deGrasse Tyson
Astrophysicist, American Museum of Natural History. Author: The Pluto Files, Death By Black Hole. Host: PBS NOVA scienceNOW58,168 followers | Follow
NASA Kepler
Starting the search for other Earth-like planets in our Milky Way Galaxy55,878 followers | Follow
Spirit and Oppy
Roaming the Red Planet on six wheels since Jan 2004. The official mission Twitter of the Spirit and Opportunity rovers.53,452 followers | Follow
National Geographic
Follow us for the latest on what’s happening at the National Geographic Channel in the U.S. My name is Darren; hit us up with questions or comments!52,610 followers | Follow
Darwin Evolution
A resource in evolutionary biology and all related fields for Year of Darwin 2009 and beyond, for scientists, enthusiasts and anyone else who is interested51,248 followers | Follow
NASA Astronauts
Hear from all NASA's astronauts on Twitter, plus updates on astronaut activities here.49,068 followers | Follow
Guardian Science
News, comment, all that stuff from the Guardian's science, health and environment team49,057 followers | Follow
PhysOrg Science News
Science news, Technology news. Physics, Space, Biology, Chemistry, Engineering, Math, Electronics, Nanotechnology, Materials, Computers, Health, Earth Science.48,892 followers | Follow
The SETI Institute
We believe we are conducting the most profound search in human history — to know our beginnings and our place among the stars.44,039 followers | Follow
Digg Science
Top science stories as they roll across the homepage of Digg.com38,015 followers | Follow
TIMEHealthSci
33,602 followers | Follow
American Elements
Science Technology from American Elements- Nanotechnology, Robotics, AdvancedMaterials, AlternativeEnergy, Lasers, Military, GreenTechnology, LifeScience, Space33,363 followers | Follow
Google Research
At Google, research is performed company wide, not just in isolated labs. We produce and leverage research to build systems that are used in the real world.29,170 followers | Follow
Eco Preservation Soc
Eco Preservation Society: Conservation, Reforestation and Education. We bring it together. Get conected, Get Involved, Make a difference.28,913 followers | Follow
HowStuffWorks.com
Random facts, inside info, the latest articles, and what's happening at the office...find it all at HowStuffWorks on Twitter.26,530 followers | Follow
Jeremy Cummings
my new hobbies Balloon Twisting, face painting and bounce houses.23,359 followers | Follow
Harvard Research
Advances in research and scholarship from across Harvard University22,330 followers | Follow
Discovery_News
DiscoveryNews.com, a Discovery Channel website that covered the latest science news on tech, animals, space, archaeology, dinosaurs, history and earth.21,233 followers | Follow
CP Science Tweets
Current Protocols has just launched the world's most interactive scientific protocol based website!21,090 followers | Follow
The Climate Project
The Climate Project is Al Gore's climate change leadership program and is a part of the Alliance for Climate Protection, a 501(c)(3) non-profit organization.20,163 followers | Follow
Medical Imaging News
molecular imaging (radiology, CT, MRI, PET/CT, nuclear medicine) news in cancer, heart disease, dementia, and preventive medicine. http://www.usmolecular.com19,717 followers | Follow
Bob Richards
Space entrepreneur. Orphan of Apollo. A founder of International Space University, Singularity University and Google Lunar X PRIZE competitor Odyssey Moon Ltd.14,916 followers | Follow
T. Brian Jones
I share useful resources with Engineers, and I'm co-founder of Industrial Interface, a community for Engineers and Suppliers in manufacturing.14,796 followers | Follow
Science Museum
Bringing science to life, and life to science... welcome to the Science Museum. Marivanna and Susannah in Marketing/Web welcome you and write the tweets.13,480 followers | Follow
LCROSS_NASA
NASA mission to explore the Moon to look for water ice at the poles! And I found it! My mission (and my tweets) ended Oct 9, 2009. But, I'm forever on the moon!13,307 followers | Follow
National Geographic
12,952 followers | Follow
Jeff Williams
12,702 followers | Follow
Sierra Club
Since 1892, the Sierra Club has been working to protect communities, wild places, and the planet itself.12,243 followers | Follow
WebPartner
Service to find the latest news and updates and Tweet. Build brand presence and following.12,088 followers | Follow
David E. Guggenheim
President of 1planet1ocean, marine scientist, sub pilot, conservation leader, speaker, educator and author. www.1planet1ocean.org, www.oceandoctor.12,003 followers | Follow
Astronomy Tweets
Talking about astronomy, planets, earth and space issues and concerns impacting our atmosphere - YES I follow back and promise you there will be ZERO DMs!!! :)11,808 followers | Follow
Randi Zuckerberg
Randi works for Facebook on the consumer marketing team. She manages projects related to media, politics, current events & non-profits.11,371 followers | Follow
Space Center Fan
Dedicated fan of Kennedy Space Center. Tweeting launch dates, tours, tickets & events in Florida, NASA, Space & more! Follow back9,527 followers | Follow
Nicole Stott
NASA Astronaut, STS-128 mission specialist; Exp. 20/21 flight engineer9,498 followers | Follow
Waclaw Koscielniak
Semiconductor Engineer in Silicon Valley. Updates from many interesting areas of life, some private.9,399 followers | Follow
Col. Tim Kopra
U.S. Army Astronaut, International Space Station Expedition 20 (STS-127). Ask me what it’s like to be Army Strong from the Space Station at goarmy.com/space.9,058 followers | Follow
Johnson Space Center
NASA's JSC is the lead center for space shuttle and International Space Station activities, and is home of the Mission Control Center and NASA astronaut corps.8,212 followers | Follow
NASA Goddard
Check out all the latest in NASA Goddard news, images and video!8,026 followers | Follow
NASAEyesOnTheEarth
Being rocket scientists isn't enough...we're climate scientists too! News from NASA on all things climate.7,912 followers | Follow
SciFi Geeks
Science Fiction news, tv shows, movies, reviews, trailers and commentary.7,879 followers | Follow
exploratorium museum
For the curious ones - the explOratorium is a museum of science, art, and human perception founded in 1969. Alex updates from the museum.7,853 followers | Follow
Neuros Technology
We Bring Internet Video to the TV with an open set-top box7,793 followers | Follow
PBS Nature
Sundays at 8PM on PBS (check local listings). Tweets by web producer Tanner Vea and the NATURE team.7,420 followers | Follow
Science Mag News
The news staff at Science Magazine bring you the hottest science news and stories, served up every weekday.7,171 followers | Follow
David Bradley
David Bradley Science Writer, Cambridge, UK, loves family, conversation, guitar, photography, singing, walking, cycling. Science.7,126 followers | Follow
Virtual Astronomer
(Previously NewburyAS) Fun Astronomy, Space, Science, nature and more by @AdrianWest Creator of #Meteorwatch. Look up and enjoy the sky!6,899 followers | Follow
Andrew Maynard
Scientist with an unhealthy interest in the dark side - policy, communication, engagement, and all that! In “spare time” direct the U. Mich Risk Science Center6,452 followers | Follow
Science So What
So let’s look at science: what is it doing for us already? How is it going to drive us to a better future?6,431 followers | Follow
Armed with Science
U.S. Defense Department's science and technology blog. You've been SCIENCED!6,276 followers | Follow
Google Lunar X PRIZE
The official Google Lunar X PRIZE Twitter account. Going back to the moon, and taking you with us.5,917 followers | Follow
SmithsonianMag
Smithsonian magazine brings history, science, nature, the arts and culture to your computer screen.5,854 followers | Follow
Forbidden Planet
I am the largest cult Megastore in the world, the High Altar of Geek and I stock the best in movie and tv related swag; more info from @danacea5,772 followers | Follow
Institute of Physics
A round-up of physics news from the Institute of Physics tweeted by Joe and Lena in the IOP press office.5,220 followers | Follow
Science Magazine
The world's leading outlet for scientific news, commentary, and cutting-edge research.5,210 followers | Follow
Your Genealogy
Genealogy, Ancestry, Genetics, Biology, Evolution, Languages.5,181 followers | Follow
Sandy Magnus
5,103 followers | Follow
WIREs Nanomedicine
Authoritative review and opinion in nanomedicine and nanobiotechnology4,874 followers | Follow
- NASA Wallops
4,783 followers | Follow
NewHorizons2015
The First Space Mission to Explore Planet Pluto and the Kuiper Belt4,622 followers | Follow
Joanne Manaster
University lab instructor, video science book reviewer, former international model who LOVES science!4,606 followers | Follow
Times Science
The inside track on science, health and the environment from The Times (of London), and the journalists who write it4,323 followers | Follow
NASA Tweetup
4,201 followers | Follow
Mark Browne
Experienced physician executive,consultant, bridging healthcare quality and finance4,163 followers | Follow
Scott Kelly
4,085 followers | Follow
Tweet 4 All
Share all important and interesting information about SCIENCE via Twitter4all.COM then FOLLOW a moderated selection on this Twitter Science Channel4,060 followers | Follow
LADEE_NASA
Lunar Atmosphere and Dust Environment Explorer - NASA Science Mission to the Moon under development; set for launch 2011!4,048 followers | Follow
Argonne National Lab
A Department of Energy research laboratory, Argonne delivers science and technology solutions to energy, environment, and security challenges.4,016 followers | Follow
Spacevidcast
Making Space Commonplace! New media company looking to the stars.3,895 followers | Follow
Mark Kelly
3,818 followers | Follow
DiscoveryComm
News from Discovery Communications (NASDAQ: DISCA, DISCB, DISCK), the world's number one nonfiction media company3,788 followers | Follow
Mitch Wagner
Freelance tech journalist, social media strategist, hiding from sun in San Diego, author of Computerworld Tool Talk blog, social media director @PalisadeDLP3,773 followers | Follow
ESA Planck
A European Space Agency (ESA) spacecraft to understand the origin and evolution of our Universe3,712 followers | Follow
Chandra Observatory
Chandra's ongoing mission is to study the X-ray Universe, including black holes, new stars, and clusters of galaxies3,708 followers | Follow
NASA Desert RATS
The NASA Desert RATS consists of multiple groups from NASA centers, universities, and other organizations. Goal: human-robotic systems for lunar exploration!3,697 followers | Follow
Museum of Science
Follow us for updates and special offers on exhibits and shows, fun science facts, and breaking news.3,622 followers | Follow
Astronomy Now
3,553 followers | Follow
Heal the Bay
Official HtB Tweeter, dedicated to making SoCal's coastal waters & watershed, incl. Santa Monica Bay, safe, healthy, & clean (with your help).3,542 followers | Follow
A Geek Mom (Shannon)
Self-employed, kidlet-chasin', Ford Escape Hybrid-drivin' Space Tweep & geek gal; Space Camp & NASATweetup alumnus (STS-129 & 130)3,530 followers | Follow
NASA Dryden
The Dryden Flight Research Center is NASA's primary center for atmospheric flight research and operations.3,493 followers | Follow
Brian Krueger
PostDoc in a soon to be OpenScience Lab who runs a science news site masquerading as a social network for the sciences. Enjoy the news and my science rants3,480 followers | Follow
LiveScience
Science news covering top stories of the day in health, environment, animals, technology and space3,423 followers | Follow
Scott Forman
Science Screen Report, an award winning classroom series (DVD/Streaming) designed to get kids interested in science. Provided free to schools.3,401 followers | Follow
U.S. HSF Committee
The Committee will conduct an independent review of ongoing U.S. human space flight plans and programs, as well as alternatives.3,332 followers | Follow
Digg (Science)
3,317 followers | Follow
Phil Harrison
Educationist (Strategy, Systems) | Lover of Music, Art & Literature | Eclectomaniac | Umweltian Semiosphereologist3,272 followers | Follow
Dr. Ian O'Neill
Space Producer for Discovery News. British expat living in the US. Enjoys a good beer but prefers tea. A toast and butter advocate.3,269 followers | Follow
FarmerPhoebe
Zone 5 organic gardener, animal lover doing my part for the green economy.3,268 followers | Follow
LA Times Science
Current Science and Medical News from the Los Angeles Times + latimes.com. See latimes.com/twitter for more news streams.3,119 followers | Follow
Ron Graham
Entrepreneur, Writer, Engineer, Teacher, Big Talker, soon to be Akron's #1 Twitterer! :-)3,031 followers | Follow
Dmitry Podolsky
Professional theoretical physicist blogging about cutting edge science/research3,014 followers | Follow
NASA CoLab
NASA CoLab connects communities inside and outside NASA to collaborate.2,979 followers | Follow
NASA Marshall News
News about NASA's Marshall Space Flight Center - Space Shuttle, Ares Rockets, Science, Engineering, & Space Station Science.2,961 followers | Follow
WI Astronomy
A space and astronomy news public outreach website. Midwest star parties and events. Come along on our 5 year mission.2,952 followers | Follow
DiscoveryCanada
Bringing you the best of Discovery in 140 characters or less.2,938 followers | Follow
AIP Publishing
Highly cited, highly respected, and highly relevant, AIP's archival journals are the cornerstone of many physics collections.2,887 followers | Follow
TS-Si News Service
TS-Si.org: research reports, news, opinion, and lifestyle articles that focus on correcting the misalignment of innate neurobiology and anatomical sex.2,866 followers | Follow
Astronomy Magazine
Astronomy informs, entertains, and inspires people who are interested in the science and hobby of astronomy.2,854 followers | Follow
CBC Tech and Science
Technology and science news and the Tech Bytes blog from CBCNews.ca.2,831 followers | Follow
ESA Herschel
A European Space Agency (ESA) mission which will be the most sensitive far-infrared telescope ever put into space.2,768 followers | Follow
Fermilab Today
2,724 followers | Follow
openstreetmap
OpenStreetMap is a free editable map of the whole world. It is made by people like you.2,709 followers | Follow
Draco Rigel
Great interest in: Astronomy, Medicine, Sci-Fi, Paranormal, Travel, Gardening, Fishing, Cats, Music, Stamp Collecting and having a Superior time period!2,660 followers | Follow
Dr. Robert L.Satcher
2,586 followers | Follow
Richard Garriott
Computer Gaming Pioneer and Private Astronaut (1st 2nd Generation)2,559 followers | Follow
quippd Science News
2,532 followers | Follow
Biological Science
The latest updates & news from the books, journals & online resources available from the Wiley-Blackwell Biological Sciences subject.2,522 followers | Follow
PhysOrg Physics News
PhysOrg.com: Physics, Nanotechnology, Materials News Stories2,512 followers | Follow
smithsonianNMAI
The National Museum of the American Indian is committed to advancing knowledge and understanding of the Native cultures of the Western Hemisphere.2,507 followers | Follow
CBD-Cntr for Bio Div
The Center works through science, law, and creative media to secure a future for all species, great or small, hovering on the brink of extinction.2,498 followers | Follow
Moon Ranger Laura
Space enthusiast; Works as a NASA contractor; Loves scifi/fantasy, travel, podcasts, fiber arts, dance, & people. Not officially speaking for anyone but me2,462 followers | Follow
Ralf Schoofs
2,348 followers | Follow
Michael Knight
- Forensic IT Consultant and Designer/Knowledge Mercenary. Worked for Microsoft, Orange, HP, DELL, UK & US Governments. Profile protected by TrueTwit.2,348 followers | Follow
Masterpiece PBS
Official Twitter presence for one of the most popular drama series on TV, famous for classic adaptations, mysteries, and contemporary works. Sundays/only on PBS2,307 followers | Follow
Dr. David Warmflash
Astrobiologist, science communicator, lead investigator on Phobos-LIFE, non-practicing physician, scientific pantheist, likes ancient Phoenicia-Israel & Greece2,290 followers | Follow
Gene J. Mikulka
Tech Writer, Producer: Talking Space Podcast, Amateur Astronomer,Space Policy Wonk, & house rabbit slave!2,278 followers | Follow
ChemistryWorld
Chemistry magazine bringing you the latest chemistry news and research every day2,272 followers | Follow
lifesciencearticles
2,271 followers | Follow
Haley & Ecogeek Crew
We are biologists, greenies and filmmakers that are dedicated to education!2,240 followers | Follow
William Pomerantz
Senior Director of Space Projects, X PRIZE Foundation. I run the $30 million Google Lunar X PRIZE.2,216 followers | Follow
Watch Documentaries
Watch documentaries online for free BBC, PBS, HBO, Showtime, History Channel, National Geographic, Biographies, Animal Planet. http://groups.to/documentaries2,146 followers | Follow
NASA Spinoff
Since 1976, NASA's Spinoff publication has featured over 1,600 NASA-derived technologies that improve your life.2,138 followers | Follow
Am Geophysical Union
The official Twitter account of the American Geophysical Union, the world's largest organization of Earth and space scientists2,125 followers | Follow
Popular Science AU
The best new science and technology news online and on news stands. Twitter account managed by online editor Rhiannon Elston2,101 followers | Follow
NOAAOceanToday
NOAA Ocean Today is a NOAA/Smithsonian partnership - Follow us for the latest ocean news2,098 followers | Follow
Military Technology
Offering up three specialist sites covering the army, naval and airforce military sectors, which supply a defence portfolio of relevant information and projects2,045 followers | Follow
Weird Science
As seen in the blogosphere! A Swedish dream team of film/tv critics2,006 followers | Follow
e! Science News
Science News updated by artificial intelligence that scans all major sources around the web2,004 followers | Follow
peter seelig
Artist / Künstler - Blind drawings created during performances offers the basis for my artistic experiments in paintings and digital art1,924 followers | Follow
Brookhaven Nat'l Lab
BNL delivers science-based solutions for the nation's energy, environmental and security needs.1,889 followers | Follow
MicrobeWorld
Manager, Public Outreach for the American Society for Microbiology. My tweets are not official ASM positions or statements.1,861 followers | Follow
BerkeleyLab
Berkeley Lab is a U.S. Department of Energy national lab. Tweets by Berkeley Lab's Public Affairs Department.1,856 followers | Follow
NASAFermiTelscp
NASA's Fermi Gamma-Ray Space Telescope (formerly GLAST) studies the extreme energy universe!1,799 followers | Follow
Sciencenibber
Using Nibipedia for science's noblest cause, world domination!!1,796 followers | Follow
Science and the City
The public gateway to the New York Academy of Sciences.1,793 followers | Follow
HarvardScience
The central portal for medicine, health, science, engineering, technology, and public health coming from the schools, and affiliates of Harvard University1,731 followers | Follow
Singularity Tech
Tweeting future trends in science, technology and transhumanism1,730 followers | Follow
Scienceline
Science, health and environmental stories from New York University journalism students.1,701 followers | Follow
Genetic Alliance
nonprofit network transforming health through genetics. openness in health systems. advocacy. empowerment. education. dialogue. informed decisions. access.1,698 followers | Follow
Mapsandearth
Google Earth lover, Google StreetView, Sky, Mars, Space, Join our group http://www.flickr.com/groups/859024@N23/1,689 followers | Follow
White Label Space
White Label Space is a brandless space tech startup & Official Google Lunar X PRIZE competitor1,635 followers | Follow
Jeff Foust
Space industry analyst, writer, blogger, baseball fan. Links not endorsements; opinions my own.1,583 followers | Follow
Nancy Atkinson
Senior Writer and Editor for UniverseToday.com, producer/editor for Astronomy Cast & 365 Days of Astronomy, and a NASA/JPL Solar System Ambassador.1,582 followers | Follow
Florida Today Space
Florida Today's space team blog, The Flame Trench, covers the space industry live, around the clock, from Kennedy Space Center and the Cape.1,563 followers | Follow
Migratory Bird Ctr
Fostering greater understanding, appreciation, and protection of the grand phenomenon of bird migration1,555 followers | Follow
Radhika Naik
Blogger passionate about and trying to make a difference in the world of science and eco awareness. Can I help spread word about your cause?1,521 followers | Follow
Nuclear Energy
Nuclear energy market research, strategy and technology consulting.1,515 followers | Follow
Arctic Sea Ice News
Follow updates to the National Snow and Ice Data Center: Arctic Sea Ice News & Analysis. For questions, please visit our Web site.1,506 followers | Follow
CERN en français
Le CERN : le plus grand laboratoire de physique des particules du monde1,479 followers | Follow
Newport Aquarium
Newport Aquarium showcases thousands of animals from around the world in a million gallons of water. You’ll be amazed at all there is to see and do.1,474 followers | Follow
It's science week!
A campaign to raise awareness for science & engineering in the UK on 11-20 March: our 2011 theme is 'Communication'. Taking part is easy... #nsew1,425 followers | Follow
Erika Vick
NASA Strategic Communications Specialist, former Space Shuttle engineer1,391 followers | Follow
Odyssey Moon
Odyssey Moon is a commercial lunar enterprise pursuing the Google Lunar X PRIZE. PLEASE FOLLOW US AT @Odyssey_Moon (http://twitter.com/Odyssey_Moon)1,364 followers | Follow
J. Craig Venter
1,362 followers | Follow
USGS Earthquake SoCa
A Twitter feed of the USGS Earthquake Notification Service for all quakes over 2.5 in Southern California1,359 followers | Follow
A Moment of Science
A Moment of Science answers thousands of common questions about the world we live in through radio programs and audio and video podcasts - A production of @wfiu1,302 followers | Follow
SmithsonianPods
The latest museum podcasts. Covering everything from Asian Art to X-ray Astronomy!1,302 followers | Follow
DailyMe Science News
The Latest Science, Space and Environmental News from Aggregated Leading Sources.1,297 followers | Follow
AstroSpaceNow.com
We obsessively track breaking news and interesting content about astronomy and space exploration over the blogosphere and Twitter so you don't have to.1,200 followers | Follow
Andy Hudson-Smith
Senior Research Fellow / Lecturer at CASA University College London1,181 followers | Follow
Fermilab Tevatron
High-energy particle accelerator providing proton-antiproton collisions to the CDF and D0 experiments1,151 followers | Follow
David L Morris
A software developer Mostly C (Win32). Currently juggling UI for Win2K, XP, Win7. Likes tracky dacks, but once wore a suit to a geek event.1,148 followers | Follow
Star Wars Nick Maley
Star Wars celebrity. Assembled Yoda for ESB. Artist and creature builder for StarWars, Superman, Highlander & more. Live in St Maarten Caribbean. starwars1,130 followers | Follow
Space Tweep Society
The official Twitter account of the Space Tweep Society. Posting news & updates on society happenings. #STwS #spacetweeps1,092 followers | Follow
Microscopy News Blog
The latest microscopy research, news, events and new products. Authored by Nancy Lamontagne.1,077 followers | Follow
Michael Woods
Quick news blasts from the American Chemical Society, the world's largest scientific society1,071 followers | Follow
MIT News Tips
MIT News Tips is the official word from MIT Media Relations, covering the latest news, events, people, and projects at MIT.1,068 followers | Follow
Dr. Heather Good
Heather Good EdD is editor of http://FoundonMars.com and webmaster of the Space Tweep Society http://SpaceTweepSociety.org If I follow I will read your tweets1,062 followers | Follow
Story Musgrave
thinker, astronaut, poet, landscape architect, doctor, speaker, marine, artist, professor, innovator1,052 followers | Follow
Astronomy Telescopes
All about astronomy, telescopes, the universe and orion!1,032 followers | Follow
Ruth Norton
Unstoppable grannie-mum, ownd by 2 she-cats, luv 2 cook-n-tell, pt wacko [ask offsprng], blogr http://stainlesscookware.storeblogs.com, wrking@eco-responsiblty1,028 followers | Follow
Clark Planetarium
Combining the best of entertainment and education to inspire wonder about space and science997 followers | Follow
SpaceCoalition
We're a collaboration of space industry businesses and advocacy groups organized to educate and inform you of the value and benefits of space exploration.997 followers | Follow
Professor Astronomy
Astronomy researcher at the University of Texas at Austin987 followers | Follow
GlasgowScienceCentre
Fun science place on the banks of the Clyde. Imax Cinema, Science Shows, Hands-on Exhibits983 followers | Follow
SciencePassion
Follow your Science Passion Here! We will be feeding all Science News, Updates and Tips. We hope to help you pursue and follow your Passion960 followers | Follow
Steven Shearin
I am a mad scientist. I shall conquer the world through shreading guitar licks and internet marketing.958 followers | Follow
Lee Billings
Writer and editor with a focus on space science and the future of humanity. Senior Associate Editor, Seed Magazine.937 followers | Follow
Geology.com News
925 followers | Follow
Microscopy News
Product & Press Portal for all Aspects of Microscopy & Accessories - We publish your News! For free!915 followers | Follow
Elizabeth Howell
Journalist. Space geek. Nomad. Also -- founder of @pars3c. Web reporter @ctvottawa and @obj_news. Freelancer for too many places to count.891 followers | Follow
Chris Calubaquib
Atlantis' legacy:32 missions - - 120,650,907 miles;297 days 11 hours 16 minutes 43 seconds. :) I am 18 years old,a Amateur Astronomer/Space Enthusiast.824 followers | Follow
The Cosmos Review
space & poetry quotes - literary magazine celebrating and commemorating humankind’s relationship with the cosmos through poetry. Space Frontier Foundation817 followers | Follow
Science Fact
Dispensing daily interesting science facts to the masses. DM fact suggestions!!!816 followers | Follow
Jim Elvidge
author of "The Universe - Solved!", entrepreneur, truth seeker, hack musician808 followers | Follow
Baylor Science
Baylor University Departments of Biology, Chemistry and Biochemistry, Environmental Science, Geology, Mathematics, Physics, Psychology and Neurology, Statistics798 followers | Follow
Are We Alone
Are We Alone is a weekly science radio program hosted by Seth Shostak and Molly Bentley. Hear it on iTunes, your local NPR station, or at radio.seti.org796 followers | Follow
Patrick M.
There is simply nothing better than looking into deep space to soothe the mind and put things into perspective.783 followers | Follow
Larry O'Hanlon
geologist, writer for Discovery News, freelance science writer781 followers | Follow
SLAC Accelerator Lab
Photon Science, Particle Physics, & Astrophysics National Lab, since 1962776 followers | Follow
stratocumulus
New Space Is A Place. And We're Going There! All the latest on SpaceX, Virgin Galactic, Bigelow Aerospace, XCOR, Blue Origin, et cetera. Go Yankees!774 followers | Follow
SmithsonianMarineStn
Yes, the Smithsonian is in Florida! We are a field station of the National Museum of Natural History, devoted entirely to marine science research and education758 followers | Follow
Pooky Amsterdam
Prolific, experienced Machinima Producer :Originator, Writer and Talent for award winning PookyMedia754 followers | Follow
Roger Weiss
NASA/JSC ISS Payloads; Certified NASA Nerd, Space Geek, Family Man, Beatles Freak, Celtic Music Fan; maybe also a bit o' a poet, but don't really know it.750 followers | Follow
gmapsmania
746 followers | Follow
Anthropology
739 followers | Follow
Mark_Changizi
Author of THE VISION REVOLUTION (Benbella), and Professor of Human Cognition at the new research institute, 2AI729 followers | Follow
CharlesSpillane
Professor (Scientist, Genetics & Biotechnology Research), National Uni of Ireland, Galway.716 followers | Follow
Wiley Life Science
The latest news, updates and resources from Wiley-Blackwell's Life Sciences Team!701 followers | Follow
Lowell Observatory
A private, non-profit institution dedicated to astronomical research and outreach.695 followers | Follow
Susan Niebur
Women make up half the bodies in the solar system -- why not half the scientists?683 followers | Follow
Stargazer93
Had an interest in the night skies since I was 11, love to help people get started in stargazing!668 followers | Follow
InteliWISE.com
Intelligent Avatars for Customer Care, Sales, Surveys, Search and more! See the Demo! Feel the WOW!!!643 followers | Follow
Stephen Braham
Quantum Cosmologist turned Arctic-going IT-exploring Rocket Scientist633 followers | Follow
James Moore
IT dude, Third Day Gomer, musician, astronomer, Bama fan, PKer, JPL/NASA SSA, #TeamBanzai member.631 followers | Follow
Dan Piponi
A bit of math, a bit of visual effects, a bit of Haskell, a bit of running622 followers | Follow
Bio-Rad Genomics
: Hi! Christina here, from the Bio-Rad Genomics team, sharing info on What’s New in PCR/ qPCR/ Transfection…Join us on FB (facebook.com/ BioRadGenomics)617 followers | Follow
sciencenewsblog
Please follow us @science and @space for our Twitter news updates.614 followers | Follow
Galactic Drifter
Possibly approaching the Solar System from the general direction of the star Alpha Cygni (Deneb). Why? Follow the Web link to learn more.596 followers | Follow
Cariann Higginbotham
Just an average girl interested in space and having fun. Hopefully together! Helping my husband Making Space Commonplace.592 followers | Follow
Science at Life
Look at life differently. Behind the scenes at the Centre for Life.579 followers | Follow
Science Outreach
The International Society for Science Outreach is an organization serving those who bridge research and public understanding of science.577 followers | Follow
Cambridge NanoTech
Atomic Layer Deposition science, systems, research & collaboration.567 followers | Follow
Martian Soil
All the fresh dirt on the planet Mars. Curated news stories lovingly crafted by Joost Schuur.541 followers | Follow
Tweak Labs
We're a public organization investigating the fields of science, engineering, and art.538 followers | Follow
Ryan Anderson
I study Mars and shoot things with lasers. I also read and blog and write.514 followers | Follow
GetOutdoorsFL
Engaging communities, families and individuals in outdoor experiences to achieve healthier lifestyles and sustain Florida’s natural resources513 followers | Follow
ASTRON -Mike Garrett
ASTRON is the Netherlands Institute for Radio Astronomy. Our mission is to make discoveries in radio astronomy happen!512 followers | Follow
Robert Foskett
Online retailer of space dressing up, astronaut food, space toys and clothing, and other cool space stuff!495 followers | Follow
The Great Look Up
Follow the biggest star gazing event in the South-East of England - 28th August 2009 - The University of Surrey Varsity Centre491 followers | Follow
True Science
True Science is helping Twitterers understand the mysteries and fun of science with fun facts, simple experiments and breaking science news.487 followers | Follow
Chandrayaan1
I am India's first mission to the moon. This is the unofficial twitter feed.482 followers | Follow
Michèle Ledgerwood
Scientist. Writer. Editor. Traveler. Linguist. Oenophile. Amateur Photographer. Live Music Fanatic. Culinary Enthusiast. Mother.478 followers | Follow
Chip Clouse
The ABA is a non-profit 501(c)(3) organization that provides leadership to birders by increasing their knowledge, skills, and enjoyment of birding.476 followers | Follow
Susannah Hamm
Science and Technology Specialist at Cuyahoga County Public Library, CCPL, sci tech educator and blogger, gardening enthusiast, lover of nature and animals.470 followers | Follow
Centennial Challenge
Finding innovative solutions to NASA's technical challenges through prize competitions open to the citizen inventor.465 followers | Follow
Diamond Light Source
Diamond Light Source is the UK national synchrotron facility.459 followers | Follow
Science at About.com
Science news, experiments, fun facts, and more from About.com's science Guides. We'll help you learn & understand. Tweets by education editor Madeleine Burry.445 followers | Follow
LunarLanderChallenge
Northrop Grumman Lunar Lander Challenge, presented by X PRIZE, and prize money from NASA420 followers | Follow
NEWS.com.auLHCWatch
Latest developments from around the web on the Large Hadron Collider from NEWS.com.au's Tech team407 followers | Follow
BioTek Instruments
BioTek Instruments designs, manufactures and sells Microplate Instrumentation and Software worldwide.384 followers | Follow
ZME Science
Bringing you the latest science news from every field, as well as features and environmental issues since 2007.382 followers | Follow
Knowledge Magazine
British magazine for the curious mind: science, history, nature (US/Canada only)377 followers | Follow
Seelye Martin
369 followers | Follow
aBitOfScience_com
Top Science news story of the day, automatically aggregated from many of the world's news348 followers | Follow
Paul Halpern
Physicist and Science Writer. Author of 12 books, most recently: Collider: The Search for the World's Smallest Particles316 followers | Follow
fundscience
A nonprofit organization working to educate the public regarding scientific research, and give the public a direct mechanism to fund this research.311 followers | Follow
Ray of Science
Ray of Science. Ray of Hope. Twittering the latest developments in Science.307 followers | Follow
NASATechGateway
NASA Langley Research Center - Innovative Partnerships Program303 followers | Follow
EurekaSpringsAS
Welcome to the Official Eureka Springs Astronomical Society Twitter Feed!264 followers | Follow
SPA Young Stargazers
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Focus Fusion Society
Our goal is to turn the dream of safe, cheap, clean, unlimited energy from aneutronic nuclear fusion into a practical reality, & do it NOW.259 followers | Follow
Integrity Marketing
Helping small business get ROI for their advertising dollar. If you are in the GTA I will follow you. I will have deals coming up from local business' soon256 followers | Follow
Jose Lopez Jr.
Single - Computers are my life – total geek – I am your Computer/IT Consultant251 followers | Follow
Dispenser of Truth
#Spaceastro Truthbot - truthsayer and defender of Ladies. See my website - I'm a celebrity!249 followers | Follow
Science Buddies
Free science fair project ideas, answers, and tools for serious students.237 followers | Follow
Alien Queen
224 followers | Follow
AstronomyCalgary
Calgary's top astronomy organizations collaborate on a schedule of public astronomy events around the city.214 followers | Follow
George C Schellenger
Extreme Moderate - Republicans and Democrats need to evolve.199 followers | Follow
DiscoveryNow
196 followers | Follow
Science Centric
Science Centric with the latest news in science, health and some technology194 followers | Follow
Davin Flateau
Astrophysics student, exoplanet researcher in training, writer, broadcaster, I play my music in the sun.193 followers | Follow
Spaceflight Now Live
192 followers | Follow
Journalof ExpBiol
The Journal of Experimental Biology is the leading journal in integrative and comparative physiology.188 followers | Follow
Sigma Astronomy Club
Moray's Astronomy Club, Sigma meets at Birnie Village Hall, Thomshill, Nr Elgin on 1st Friday of every month. Non members welcome. Doors open 7pm188 followers | Follow
Trent Waddington
I code and I like space ;) If you would like me to add you, follow me. If you don't want to follow me, unfollow me. Do both if you want.187 followers | Follow
Bits Of Earth
We sell meteorites and natural minerals. Check back often! www.bitsofearth.com180 followers | Follow
Astronomia Dorking
Surrey's Dedicated Astronomy Centre - stocking telescopes, binoculars, books & accessories173 followers | Follow
paul doyle
Ireland based Computer scientist, but my passion is Space and Astronomy170 followers | Follow
Andre Aske
Gamer and Musician. Interested in Astrology and Astronomy/Space exploration. Generally a freethinker who's into all sorts of things.170 followers | Follow
Chad Jardine
Optimist, Entreprenuer, Marketer, Consultant, Tech Junkie, Husband and Father, Working on: Full Throttle, Uber-Saturated, Hyper Chromatic Human Being167 followers | Follow
Astro Phoenician
Moved from London, England Studied astrophysics Built optical & radio telecopes Advocate space program Work in global telecommunications #NASA #astronomy161 followers | Follow
Steven Leavitt
Fan of NASA and space exploration. Father of 2 boys. Red Sox Fan.155 followers | Follow
Science of the Times
Twitter account for the Science of the Times website, where science, journalism and technology collide.154 followers | Follow
New Materials
Interesting things from the world of new materials by Chris Spurgeon (www.spurgeonworld.com/blog/145 followers | Follow
Aberdeen Astro Soc
Encouraging astronomy in the Aberdeen area, Cosmic Curries a speciality! Aurora Always.145 followers | Follow
Chris Morgan
Scientist & conservationist working on bears and other wildlife through imaginative films (like BEARTREK, PBS NATURE) and education projects (like GBOP)142 followers | Follow
Science Frontier
Autotweets about Space Science - News about missions, discoveries and the science of the universe. Set-up & monitored by @justingould139 followers | Follow
AGalaxyCalledDallas
A hub for all things sci-fi (or scifi or science fiction) and fantasy in the Dallas / Fort Worth area. News and events from across the universe.137 followers | Follow
AdvancedPhotonSource
World-class synchrotron x-ray science in energy, technologically important materials, health, economic competitiveness, security, and basic research.134 followers | Follow
lightsources.org
lightsources.org serves as a clearing house for light-source-related news, educational material, and user-related information.133 followers | Follow
citizensci
Celebrating citizen scientists, who collect and share observational data about the world around them.127 followers | Follow
InsideScience - ISNS
The authoritative source for original news content that explains the science behind the latest headlines.110 followers | Follow
jupitertoday
105 followers | Follow
Solar System Watch
I am a planetary scientist who also blogs about astronomy and the exploration of the Solar System.90 followers | Follow
David Reneke
Australian Astronomy Researcher, Writer, Presenter and Lecturer. Establish Astronomy Outreach bring space to schools throught Australia in 2004.88 followers | Follow
Thirteen Science
Welcome to THIRTEENScience's BrainDish - our musings on the latest science and technology news you didn’t know you needed to know.87 followers | Follow
GreenLantern XLsior
GreenLantern Excelsior from Second Life, nuclear power advocate, Sheriff Arpaio fan, openly conservative83 followers | Follow
Paczynski_Scope
Paczynski Observatory was established in memory of Professor Bohdan Paczynski of Princeton University. http://www.astro.princeton.edu/~bp/82 followers | Follow
MASA Group
Provider of advanced software solutions, leveraging unique proprietary Artificial Intelligence engines.80 followers | Follow
Baruch Blumberg
79 followers | Follow
Astrobob Group
76 followers | Follow
ChileScope
75 followers | Follow
Roger Jones
Retired. Interests: family history, astronomy, postcards, Malvern, ziksby54 followers | Follow
Grant Miller
Astronomer, husband, dad posting one basic astronomy tweet/day. NASA/JPL Solar System Ambassador Volunteer.37 followers | Follow
Jeremy Perez
15 followers | Follow
Space Astrotivity
Tweet with love content about astronomy, space, science or physics.8 followers | Follow
