Science Enthusiast 500
National Geographic
Since 1888, we've traveled the Earth, sharing its amazing stories with new generations. Official Twitter account of National Geographic.1,354,434 followers | Follow
AstrobiologyNAI
NASA Astrobiology Institute: we study life in the Universe!927,574 followers | Follow
William Shatner
Philanthropist, Actor, Producer, Father, Husband, and Grandfather926,267 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.834,567 followers | Follow
Deepak Chopra
756,169 followers | Follow
Buzz Aldrin
Astronaut, Apollo XI and Gemini 12; Doctorate from MIT in astronautics, Korean War veteran (fighter pilot of 66 missions). photo by Don Camp748,477 followers | Follow
Discovery Channel US
News and much more from Discovery Channel U.S. Press info at press.discovery.com746,522 followers | Follow
WIRED Science
Science, space, energy and robot sharks with lasers. Hosted by the Wired Science team: @betsymason, @9brandon, @davemosher & @danielleventon.621,056 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 them609,769 followers | Follow
Adam Savage
I play a scientist on TV. Obsessive maker of things. Host of Mythbusters on the Discovery Channel.598,025 followers | Follow
New Scientist
New Scientist is the world's leading science and technology weekly477,771 followers | Follow
Science Channel
Thought-provoking updates, insider news and more from Science...show your #nerdtweet pride!390,826 followers | Follow
Grant Imahara
Robot builder, modelmaker and television host on Mythbusters.385,001 followers | Follow
Chris Latko クリスラトゥコ
Interested in all things tech. Apple, iPhone, OSX, Xcode, LAMP, Obj-C, SproutCore/Amber.js, Cappuccino, JavaScript, Ruby, Python, GNU/Linux. Will follow back.360,256 followers | Follow
Neil deGrasse Tyson
Astrophysicist, American Museum of Natural History. Author: The Pluto Files, Death By Black Hole. Host: StarTalk Radio http://StarTalkRadio.net326,665 followers | Follow
Astro Pic Of The Day
Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.322,483 followers | Follow
Nature News&Comment
The latest science news and opinion from Nature magazine. Winner Best Twitter, Online Media Awards 2011. Most tweets by @BL_Owens, @Ananyo and @bmahersciwriter312,380 followers | Follow
Scientific American
Scientific American Magazine and online, over 165 years of science news311,997 followers | Follow
NYTimes Science
Science, Environment, Space and Cosmos News From NYTimes.com/Science279,010 followers | Follow
Reuters Science News
From newly charted astronomical anomalies at the far reaches of the universe to the rise of nanotechnology, nobody covers science like Reuters.com.276,023 followers | Follow
Science News
Daily news of science advancements from physics to medicine. Publisher @society4science. Moderator @hrothmann. See also @sciencenewskids.272,863 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.229,071 followers | Follow
Guardian Science
News, comment, all that stuff from the Guardian's science, health and environment team224,990 followers | Follow
Jose Hernandez
Retired NASA Astronaut and native of Stockton. Running for U.S. Congress in California's 10th District. Devoted husband, loving father, and a proud Democrat.222,164 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 interested215,038 followers | Follow
NASA Kepler
The Kepler Mission is designed to survey our region of the Milky Way galaxy to discover Earth-size planets in the habitable zone.200,721 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.193,357 followers | Follow
Science Friday
Sci/tech radio program on NPR; video,Twitter (@scifri, @sci_arts) and Facebook/scifri. Got ideas? Write and tweet us @scifri all week and during the show.190,874 followers | Follow
CassiniSaturn
Cruising around Saturn, its moons and the magnificent rings179,710 followers | Follow
National Geographic
Follow us for the latest on what's happening at the National Geographic Channel in the U.S. Questions and comments welcome!169,760 followers | Follow
TIME Healthland
Daily health and wellness news, including the latest research in medicine, nutrition, fitness, mental health, family, parenting and more162,863 followers | Follow
Digg Science
Top science stories as they roll across the homepage of Digg.com148,170 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.148,155 followers | Follow
Science Museum
Bringing science to life, and life to science... welcome to the Science Museum. Gemma in Marketing/Web welcomes you and writes the tweets.146,688 followers | Follow
Maria Popova
Interestingness curator and semi-secret geek obsessed with combinatorial creativity. Editor of @brainpickings. Bylines for @WiredUK @TheAtlantic @DesignObserver141,113 followers | Follow
PhysOrg Science News
Science news, Technology news. Physics, Space, Biology, Chemistry, Engineering, Math, Electronics, Nanotechnology, Materials, Computers, Health, Earth Science.133,411 followers | Follow
ChemistryWorld
Chemistry magazine bringing you the latest chemistry news and research every day127,827 followers | Follow
NASA Astronauts
Hear from all NASA's astronauts on Twitter, plus updates on astronaut activities here.125,827 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.98,939 followers | Follow
Curiosity Rover
NASA's next mission to Mars. I'm currently en route to the Red Planet. Arrival anticipated Aug. 5, 2012.89,079 followers | Follow
Discovery_News
DiscoveryNews.com, a Discovery Channel website that covers the latest science news on tech, gadgets, animals, space, adventure, autos, history and earth.64,182 followers | Follow
Harvard Research
Advances in research and scholarship from across Harvard University57,885 followers | Follow
Johnson Space Center
NASA's JSC is the lead center for the International Space Station and the Orion spacecraft, and the home of the Mission Control Center and NASA astronaut corps.53,607 followers | Follow
HowStuffWorks.com
Random facts, the latest articles and what's happening at the office, brought to you by Site Director Tracy, Editor Holly and Senior Writer Robert.51,929 followers | Follow
Mark Kelly
51,919 followers | Follow
Popular Science
Popular Science's Twitter feed, the source for science and technology news from the future. Includes daily blog posts, every article from the magazine and more49,048 followers | Follow
NASA Goddard
Tweeting the best in NASA astronomy, Earth sciences and robotic exploration for the Goddard Space Flight Center.41,021 followers | Follow
Rick Oliver
⋆≡☼≡⋆ Great interest in: Astronomy ♣ Time pieces ♥ Paranormal ♠ Travel ♦ Outdoors ♣ Cats ♥ Music ♠ Wine ♦ Stamps & Coins. Having a Superior Time! ⋆≡☼≡⋆40,211 followers | Follow
Science Magazine
The world's leading outlet for scientific news, commentary, and cutting-edge research.38,426 followers | Follow
Eco Preservation Soc
Eco Preservation Society: Conservation, Reforestation and Education. We bring it together. Get conected, Get Involved, Make a difference.34,323 followers | Follow
NASAEyesOnTheEarth
Being rocket scientists isn't enough...we're climate scientists too! News from NASA on all things climate.33,975 followers | Follow
Sierra Club
Since 1892, the Sierra Club has been working to protect communities, wild places, and the planet itself.33,344 followers | Follow
Weather Underground
wunderground.com delivers the most reliable weather info possible. We monitor conditions around the world, providing weather you can count on.32,934 followers | Follow
Justin Matthew ♕
Primary focus is what I can do for the HouseHoldHacker Network. Give YouTubers advice that then went Viral. Ask me I answer! JOIN ME http://goo.gl/2skkH32,910 followers | Follow
NASA Tweetup
Follow us for announcements of and info about upcoming NASA Tweetups.32,746 followers | Follow
American Elements
Science Technology from American Elements- Nanotechnology, Robotics, AdvancedMaterials, AlternativeEnergy, Lasers, Military, GreenTechnology, LifeScience, Space31,478 followers | Follow
Bob Richards
Space entrepreneur. Orphan of Apollo. A Founder of the International Space University, Singularity University, SEDS, Odyssey Moon & Moon Express (CEO).31,182 followers | Follow
Scott Kelly
29,335 followers | Follow
LiveScience
Science news covering top stories of the day in health, environment, animals, technology and space29,169 followers | Follow
Smithsonian Magazine
Official Twitter feed for Smithsonian magazine and Smithsonian.com. Updates on history, science, arts and culture. @ replies may be reprinted in the magazine.24,928 followers | Follow
Institute of Physics
Official twitter account for the Institute of Physics (IOP). Lena from the press office tweets physics news and research, IOP activities and events.24,831 followers | Follow
Popular Mechanics
The best in technology, science, aerospace, DIY and gadget news.24,690 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!23,911 followers | Follow
Virtual Astronomer
Astronomy, Science, Nature and more, Creator of #Meteorwatch, writer for Universe Today and the BBC. Making Stargazing fun and accessible to all.23,786 followers | Follow
Discovery Space
The space topic hub for @Discovery_News. All things astronomy, physics, cosmology, spaceflight, NASA, exoplanets & more! (Administered by @astroengine.)23,035 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.com22,400 followers | Follow
Sandy Magnus
21,394 followers | Follow
Exploratorium
For the curious ones - the explOratorium is a museum of science, art, & human perception founded in 1969 by Dr. Frank Oppenheimer. Alex updates from the museum.21,381 followers | Follow
Jeremy Cummings
The Balloon Bandit of Amusement with a Twist Orlando Florida. 407-341-2148 We offer Balloon Twisting, Face Painting, Bounce Houses and Balloon Decorations21,067 followers | Follow
NASA Dryden
The Dryden Flight Research Center is NASA's primary center for atmospheric flight research and operations.20,799 followers | Follow
NASA Marshall News
News about NASA's Marshall Space Flight Center - Space Shuttle, Rockets, Science, Engineering, & Space Station Science.19,763 followers | Follow
DiscoveryComm
News from Discovery Communications (NASDAQ: DISCA, DISCB, DISCK), the world's number one nonfiction media company19,538 followers | Follow
Times Science
The inside track on science, health and the environment from The Times (of London), and the journalists who write it18,527 followers | Follow
- NASA Wallops
18,109 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 space exploration!17,487 followers | Follow
David E. Guggenheim
Marine scientist, conservation leader, sub pilot, speaker, educator, author. Sr. Fellow at The Ocean Foundation. Host, The Ocean Doctor http://oceandoctor.org16,945 followers | Follow
NewHorizons2015
The First Space Mission to Explore Planet Pluto and the Kuiper Belt16,738 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 PBS16,488 followers | Follow
PBS Nature
Wednesdays at 8PM on PBS (check local listings). Tweets by the NATURE team.16,304 followers | Follow
Chandra Observatory
Chandra's ongoing mission is to study the X-ray Universe, including black holes, new stars, and clusters of galaxies16,236 followers | Follow
Science Mag News
The news staff at Science Magazine bring you the hottest science news and stories, served up every weekday.16,154 followers | Follow
NASA Goddard Images
@NASAGoddard is home to great pix, vids & visualizations. We Tweet the very best of them to you!15,981 followers | Follow
David Bradley
Science news, views, interviews and tech talk from Science Writer David Bradley based in Cambridge, England, UK.14,985 followers | Follow
Space Center Fan
Dedicated fan of Kennedy Space Center, tweeting launch dates, tours, tickets & events in Florida, NASA, Space & more! Follows back14,815 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.14,782 followers | Follow
Argonne National Lab
A @ENERGY laboratory, Argonne delivers science and tech solutions to energy, environment and security challenges. Tweeting for Argonne is web-editor @SoosheBot.13,869 followers | Follow
Forbidden Planet
The world's largest cult entertainment Megastore, the home and hub of the best geek shopping! Customer services: http://forbiddenplanet.com/contact/13,792 followers | Follow
Google Lunar X PRIZE
The official Google Lunar X PRIZE Twitter account. Going back to the moon, and taking you with us.13,362 followers | Follow
NASA Spinoff
Since 1976, NASA's Spinoff publication has featured over 1,750 NASA-derived technologies that improve your life.13,268 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!!! :)13,240 followers | Follow
ESA Planck
A European Space Agency (ESA) spacecraft to understand the origin and evolution of our Universe12,717 followers | Follow
Joanne Manaster
Biology lecturer, video science book reviewer, co-host of @sciamblogs- PsiVid. #STS135 #NASAtweetup alum, former international model who LOVES science!12,096 followers | Follow
Astronomy Magazine
Astronomy informs, entertains, and inspires people who are interested in the science and hobby of astronomy.11,783 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 Center11,598 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?11,426 followers | Follow
Fermilab Today
Fermilab's mission is to advance the understanding of the fundamental nature of matter and energy.11,211 followers | Follow
Waclaw Koscielniak
Semiconductor Engineer in Silicon Valley. Updates from many interesting areas of life, some private.11,147 followers | Follow
Nat Geo magazine
The official journal of the National Geographic Society, inspiring people to care about the planet since 1888.10,710 followers | Follow
Armed with Science
U.S. Defense Department's science and technology blog. You've been SCIENCED!10,630 followers | Follow
WebPartner
Service to find the latest news and updates and Tweet. Build brand presence and following.10,545 followers | Follow
AmericanIndianMuseum
The Smithsonian's National Museum of the American Indian is committed to advancing knowledge and understanding of the Native cultures of the Western Hemisphere.9,890 followers | Follow
Museum of Science
Follow us for updates and special offers on exhibits and shows, fun science facts, and breaking news.9,761 followers | Follow
NOAAOceanToday
NOAA Ocean Today is a NOAA/Smithsonian partnership - Follow us for the latest ocean news9,365 followers | Follow
L.A. Times Science
Science and medical news from @latimes. See latimes.com/twitter for more news streams.9,317 followers | Follow
ESA Herschel
A European Space Agency (ESA) mission . Both the most sensitive far-infrared telescope ever put into space &, at 3.5m, the largest space telescope of any kind.9,187 followers | Follow
Spacevidcast
Making Space Commonplace! New media company looking to the stars.8,939 followers | Follow
NASA CoLab
NASA CoLab connects communities inside and outside NASA to collaborate.8,910 followers | Follow
Am Geophysical Union
Official account of the American Geophysical Union, the world's largest organization of Earth and space scientists.8,841 followers | Follow
Discovery Channel
Bringing you the best of Discovery in 140 characters or less.8,506 followers | Follow
WI Astronomy
A Wisconsin based Space and Astronomy news public outreach website. Come along on our 5 year mission.8,455 followers | Follow
OpenStreetMap
OpenStreetMap is the free editable map of the whole world. It is made by people like you.8,162 followers | Follow
Biological Science
The latest updates & news from the books, journals & online resources available from the Wiley-Blackwell Biological Sciences subject.8,022 followers | Follow
BerkeleyLab
Lawrence Berkeley National Lab is an @ENERGY national lab. Tweets by Berkeley Lab's Public Affairs Department.7,894 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.7,815 followers | Follow
Heal the Bay
Official HtB Tweeter, making SoCal's coastal waters & watershed, including Santa Monica Bay, safe, healthy, & clean (with your help, because you love it!)7,771 followers | Follow
jane farmer
Keeping an eye on the world... I am a Christian remote viewer, writer, photographer, foodie and working on my green thumb!7,700 followers | Follow
Brian Krueger, PhD
Science news site and Blog Network masquerading as a social network for the sciences. Enjoy the news and our science rants.7,506 followers | Follow
Astronomy Update
7,139 followers | Follow
Encyclopedia of Life
Global access to knowledge about life on Earth. Personal, accessible, engaging and free. Come visit at www.eol.org7,030 followers | Follow
Neuros Technology
We Bring Internet Video to the TV with an open set-top box7,026 followers | Follow
Mark Browne
Experienced physician executive,consultant, bridging healthcare quality and finance6,973 followers | Follow
Richard Garriott
Computer Gaming Pioneer and Private Astronaut (1st 2nd Generation)6,717 followers | Follow
WorldSciFest
The World Science Festival is a tribute to imagination, ingenuity, and inventiveness. The 2012 Festival is scheduled for May 30th to June 3rd, in New York City.6,532 followers | Follow
AIP Publishing
Highly cited, highly respected, and highly relevant, AIP's archival journals are the cornerstone of many physics collections.6,529 followers | Follow
Dr. Ian O'Neill
Discovery News Space Producer. Recovering British solar physicist. Enjoys good beer, prefers tea. Toast & butter advocate. Hairy Atheist. 2012 doomsday debunker6,454 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.6,368 followers | Follow
WIREs Nanomedicine
Authoritative encyclopedic review publication addressing key topics from the perspectives of medicine, biology, physics, chemistry, & engineering. 2010 IF 2.1896,337 followers | Follow
Brookhaven Nat'l Lab
Brookhaven Lab delivers science-based solutions for the nation's energy, environmental and security needs.6,255 followers | Follow
Brain Science
6,237 followers | Follow
A Geek Mom (Shannon)
Self-employed web developer; Space Tweep & geek gal; Space Camp (1987) & NASATweetup alumnus since Nov. 2009 (STS-129 KSC). My tweets are my own.6,139 followers | Follow
HarvardScience
The central portal for medicine, health, science, engineering, technology, and public health coming from the schools, and affiliates of Harvard University6,127 followers | Follow
Jen Scheer
Former Space Shuttle technician. Artist, photographer, inventor. Space Tweep Society founder, @YurisNight & @FragileOasis contributor, 2010 Shorty Award winner.6,112 followers | Follow
e! Science News
Science News updated by artificial intelligence that scans all major sources around the web5,994 followers | Follow
PhysOrg Physics News
PhysOrg.com: Physics, Nanotechnology, Materials News Stories5,982 followers | Follow
Science and the City
The public gateway to the New York Academy of Sciences.5,981 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 projects5,463 followers | Follow
MicrobeWorld
Chris Condayan, Public Outreach Manager, American Society for Microbiology. My tweets and @replies are not official comments or statements from the ASM.5,351 followers | Follow
SpaceX Missions
Official play-by-play for SpaceX webcasts. For regular updates, follow SpaceX @SpaceXer.5,303 followers | Follow
Space Tweep Society
The official Twitter account of the Space Tweep Society. Posting news & updates on society happenings. #STwS #spacetweeps5,166 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 @wfiu5,083 followers | Follow
Scienceline
Science, health and environmental stories from New York University journalism students.4,971 followers | Follow
CERN en français
Le CERN : le plus grand laboratoire de physique des particules du monde4,955 followers | Follow
Migratory Bird Ctr
Fostering greater understanding, appreciation, and protection of the grand phenomenon of bird migration4,947 followers | Follow
The Quantum Activist
There's a revolution going on in science. A genuine paradigm shift.4,923 followers | Follow
Jeff Foust
Space industry analyst, writer, blogger, baseball fan. Links not endorsements; opinions my own.4,883 followers | Follow
Fermilab Tevatron
High-energy particle accelerator providing proton-antiproton collisions to the CDF and D0 experiments4,830 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.4,592 followers | Follow
CBC Tech and Science
Technology and science news and the Tech Bytes blog from CBCNews.ca.4,583 followers | Follow
Florida Today Space
FLORIDA TODAY's space team covers NASA and the space industry around the clock from Kennedy Space Center.4,538 followers | Follow
peter seelig
Artist / Künstler - Blind drawings created during performances offers the basis for my artistic experiments in paintings and digital art4,533 followers | Follow
William Pomerantz
Vice President for Special Projects at Virgin Galactic. Former head of the $30 million Google Lunar X PRIZE. Opinions here are my own, not my employer's.4,436 followers | Follow
Daniel Fischer
All things astronomy and space (and then some) - in tiny bits and pieces but mostly with links to more ... :-)4,376 followers | Follow
Genetic Alliance
nonprofit network transforming health through genetics. openness in health systems. advocacy. empowerment. education. dialogue. informed decisions. access.4,344 followers | Follow
Dr. David Warmflash
Astrobiologist, science communicator, US lead investigator on Phobos-LIFE, physician, scientific pantheist, likes ancient Phoenicia-Israel & Greece4,338 followers | Follow
USGS Earthquake SoCa
A Twitter feed of the USGS Earthquake Notification Service for all quakes over 2.5 in Southern California4,198 followers | Follow
Nancy Atkinson
Senior Writer and Editor for Universe Today, Project Manager for 365 Days of Astronomy, Host of NLSI podcast & a NASA/JPL Solar System Ambassador.4,125 followers | Follow
Digg (Science)
4,104 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.3,892 followers | Follow
geocommons
A community for anyone to share geographic data, maps and analysis. Powered by @geoiq!3,840 followers | Follow
Phil Harrison
Educationist, Strategist http://paper.li/PhilHarrison/1326242668 Semiosphereologist3,803 followers | Follow
ScienceWeekUK Team
Thousands of events and activities in all types of venues showing how the sciences & engineering relate to our everyday lives: 9–18 March 2012 #SciWeek3,749 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.3,746 followers | Follow
DailyMe Science
The Latest Science, Space and Environmental News from Aggregated Leading Sources.3,661 followers | Follow
quippd Science News
3,618 followers | Follow
Geology.com News
3,534 followers | Follow
Gene J. Mikulka
Spaceflight Observer Producer & Editor, Talking Space Panelist, Amateur Astronomer, Grad Student, House Rabbit Advocate. Opinions here are my own.3,520 followers | Follow
SmithsonianPods
The latest museum podcasts. Covering everything from Asian Art to X-ray Astronomy!3,366 followers | Follow
RobertPearlman
Editor and Founder of collectSPACE.com: The Source for Space History and Artifacts, and 2009 Space Camp Hall of Fame inductee3,292 followers | Follow
Wayne Hale
Former Space Shuttle Program Manager & Flight Director for 40 missions. Now retired from NASA after 32 years. Currently consults for SAS & a full time grandpa.3,258 followers | Follow
Story Musgrave
thinker, astronaut, poet, landscape architect, doctor, speaker, marine, artist, professor, innovator3,243 followers | Follow
Weird Science
As seen in the blogosphere! A Swedish dream team of film/tv critics3,205 followers | Follow
Moon Ranger Laura
Space enthusiast; NASA contractor; Loves scifi/fantasy, travel, podcasts, fiber arts, dance, & people. Not officially speaking for anyone but me.3,138 followers | Follow
InteliWISE.com
Virtual Agent software for customer engagement, help desk eCommerce, that works like an automated live chat and intelligent search. Just ask a question...3,125 followers | Follow
Erika Vick
Experience NASA! Former Space Shuttle engineer. My opinions are my own and do not necessarily reflect those of my employer.3,085 followers | Follow
GlasgowScienceCentre
A unique day out, making learning about science a fun adventure! So much to see and do - interactive exhibits, planetarium, live science shows & Imax 3D cinema3,055 followers | Follow
Michael Knight
Visual FX Artist/Designer/Knowledge Mercenary™ and all round I.T Guy. Worked for Mass Illusion, Paramount, Microsoft, UK & US Governments. I wear many hats...3,041 followers | Follow
Michael Woods
News from the American Chemical Society, the world's largest scientific society3,000 followers | Follow
Centennial Challenge
Finding innovative solutions to NASA's technical challenges through prize competitions open to the citizen inventor.2,951 followers | Follow
LunarOrbiter
Providing New Imagery and Data From the 1960's NASA Lunar Orbiter Missions For 21st Century Exploration2,884 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 education2,667 followers | Follow
Haley & Ecogeek Crew
We are biologists, greenies and filmmakers that are dedicated to education!2,664 followers | Follow
gmapsmania
Google Maps Mania is the most popular unofficial Google Maps blog tracking the websites, mashups and tools being influenced by Google Maps.2,663 followers | Follow
Archaeology Tools
Archaeology tools and trowels. Largest Global Supplier for professional and amateur Archaeologists.2,610 followers | Follow
Earth News ReTweeted
A ReTweet wildlife & environment news service associated with @Earth_News2,587 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.2,560 followers | Follow
Mark Changizi
Author of VISION REVOLUTION and HARNESSED: How Language and Music Mimicked Nature and Transformed Ape to Man. Director of Human Cognition, 2AI2,413 followers | Follow
Free Documentaries
Watch documentaries online for free BBC, PBS, HBO, Showtime, History Channel, National Geographic, Biographies, Animal Planet. unhub.com/documentaries2,357 followers | Follow
Clark Planetarium
Combining the best of entertainment and education to inspire wonder about space and science. Clark Planetarium a Salt Lake County Agency.2,322 followers | Follow
Lee Billings
Freelance science journalist, writing a book for Current/Penguin about the astronomical search for alien Earths. Five Billion Years of Solitude drops in 2013.2,303 followers | Follow
Chris Calubaquib
College student/Astronomy/Photography/Space Enthusiast/Music/Arts/Tech... Veteran of #NASAtweetups: #STS130 JSC & #STS132 KSC, #STS135 #SVP & #NASAAmes! ;D2,205 followers | Follow
White Label Space
White Label Space is a brandless space tech startup & Official Google Lunar X PRIZE competitor2,190 followers | Follow
David Dickinson
Astronomy, space, science, and oh yeah, astronomy...writer, teacher, ponderer. We're big in Belgium and Pakistan. Seth Green Re-tweeted us once.2,171 followers | Follow
Professor Astronomy
Astronomy researcher at the University of Texas at Austin2,122 followers | Follow
Alice Sheppard
MSc Astrophysics mature student, Galaxy Zoo mod, co-founder of Cardiff and Hackney Skeptics in the Pub, citizen science maniac, and general dazed waffler2,098 followers | Follow
lifesciencearticles
2,064 followers | Follow
Susan Niebur
Women make up half the bodies in the solar system -- why not half the scientists?1,940 followers | Follow
Astronomy Telescopes
All about astronomy, telescopes, the universe and orion!1,821 followers | Follow
Cambridge NanoTech
Atomic Layer Deposition science, systems, research & collaboration.1,813 followers | Follow
Elizabeth Howell
Full-time journalist for @obj_news by day, M.Sc. Space Studies candidate @myUND by night. @SpaceRef freelancer. Watched three shuttle launches in person.1,774 followers | Follow
Science at Life
Look at life differently. Behind the scenes at the Centre for Life.1,766 followers | Follow
Ralf Schoofs
In my early days the lunar landings aroused my interest in space. Now I am an artist and illustrator! Have a look at my #spaceart designs!1,761 followers | Follow
Big Picture Science
Big Picture Science 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.org1,728 followers | Follow
Microscopy News Blog
The latest microscopy research, news, events and new products. Authored by Nancy Lamontagne.1,713 followers | Follow
Tim Bailey
Catalyst, father of adventurous toddler, free-range space tweep, & proficient at zero gravity flips in multiple axis. SPACE IS AWESOME.1,701 followers | Follow
Microscopy News
Product & Press Portal for all Aspects of Microscopy & Accessories - We spread your news!1,656 followers | Follow
Mapsandearth
Google Earth lover, Google StreetView, Sky, Mars, Space, Join our group http://www.flickr.com/groups/859024@N23/1,633 followers | Follow
NASATechGateway
NASA Langley Research Center - Technology Transfer, SBIR/STTR & Partnerships1,631 followers | Follow
e-ScienceTalk
reporting on grid and high performance computing across Europe (previously known as GridTalk)1,627 followers | Follow
Dr. Heather Good
Heather Good EdD is editor of http://FoundonMars.com Attendee of STS-134 Tweetup!!1,627 followers | Follow
SpaceCoalition
Space Exploration. A group of space industry businesses & advocacy groups organized to educate and inform on the value and benefits of space exploration.1,614 followers | Follow
Diamond Light Source
Diamond Light Source is the UK national synchrotron facility.1,537 followers | Follow
Patrick M.
There is simply nothing better than looking into deep space to soothe the mind and put things into perspective. IT & Content Geek. Spaceflight. Tech Rocks!1,516 followers | Follow
Ron Atkins
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!1,515 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)1,474 followers | Follow
ASTRON -Mike Garrett
ASTRON is the Netherlands Institute for Radio Astronomy. Our mission is to make discoveries in radio astronomy happen!1,446 followers | Follow
Wiley Life Science
The latest news, updates and resources from Wiley-Blackwell's Life Sciences Team!1,427 followers | Follow
Talking Space
The Talking Space Podcast: A Free and Open Exchange of Ideas and Opinions on All Things Space.1,406 followers | Follow
GetOutdoorsFL
Engaging communities, families and individuals in outdoor experiences to achieve healthier lifestyles and sustain Florida’s natural resources1,393 followers | Follow
Douglas Messier
Managing editor, Parabolicarc.com. Writer. Editor. Blogger. Busy.1,392 followers | Follow
Lowell Observatory
A private, non-profit institution dedicated to astronomical research and outreach.1,391 followers | Follow
Dan Piponi
I used to write software for visual effects. These days I work for Google.1,386 followers | Follow
Pooky Amsterdam
Award winning real-time animation producer using Second Life as a media platform Why watch TV when you can star in your own cartoon movie everyday?1,369 followers | Follow
Nathan Bergey
Open source rocket scientist, open science strategist. Made the ISS Notify lamp and other cool space things.1,369 followers | Follow
Martian Soil
All the fresh dirt on the planet Mars. Curated news stories lovingly crafted by Joost Schuur (@joostschuur).1,368 followers | Follow
Alan Ladwig
Depty Asso Administrator for Public Outreach at NASA HQ. Artist disguised as a bureaucrat. My heroes have always been cowboys.1,337 followers | Follow
Project Galileo
On-line telescope for schools across the UK For more info, visit: http://projectgalileo.org.uk Squidoo Lens: http://is.gd/nTQP1,300 followers | Follow
Chandrayaan1
I am India's first mission to the moon. This is the unofficial twitter feed.1,288 followers | Follow
Deirdre Kelleghan
I am an amateur astronomer, an artist and I like to write. Co Author of Sketching the Moon an Astronomical Artists Guide http://amzn.to/mwwJcS MSL NASATweetup1,274 followers | Follow
David L Morris
A software developer Mostly C (Win32). Currently singing in C# for ASP.NET SQL Intranet application on a mine site.1,271 followers | Follow
Stephen Braham
Quantum Cosmologist turned Arctic-going IT-exploring Rocket Scientist1,231 followers | Follow
CharlesSpillane
Professor (Scientist, Genetics & Biotechnology Research), National Uni of Ireland, Galway. SFI Investigator. Science Gallery Leonardo.1,224 followers | Follow
Odyssey Moon
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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 Passion1,213 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. starwars1,194 followers | Follow
James Moore
IT dude, believer, Third Day Gomer, musician, astronomer, Bama grad, JPL/NASA SSA, band parent, BSFer. Opinons are my own.1,181 followers | Follow
The World Science
The World Science podcast features global science news. Presented by your hosts Rhitu Chatterjee & Elsa Youngsteadt. We're co-produced by the BBC/PRI/WGBH.1,163 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.1,144 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.1,107 followers | Follow
Science Outreach
The International Society for Science Outreach is an organization serving those who bridge research and public understanding of science.1,094 followers | Follow
BioTek Instruments
BioTek Instruments designs, manufactures and sells Microplate Instrumentation and Software worldwide.1,078 followers | Follow
The Cosmos Review
space & poetry quotes - literary magazine celebrating and commemorating humankind’s relationship with the cosmos through poetry. Space Frontier Foundation1,065 followers | Follow
Cariann Higginbotham
Just an average girl interested in space and having fun. Hopefully together! Helping my husband in Making Space Commonplace.1,051 followers | Follow
Knowledge Magazine
The BBC's magazine for the curious mind: science, history, nature. Know more. Anywhere. Available in the UK, US and Canada; licensed editions around the world1,035 followers | Follow
Ryan Anderson
I study Mars and shoot things with lasers. I also read and blog and write.990 followers | Follow
Jim Elvidge
author of The Universe - Solved!, entrepreneur, truth seeker, hack musician988 followers | Follow
aBitOfScience_com
Top Science news story of the day, automatically aggregated from many of the world's news966 followers | Follow
Michèle Ledgerwood
Science, infectious diseases, humanitarian ops, ICT4[x], health and security. Writer, Editor, Globetrotter, Linguist, Oenophile, Live Music Buff, Nikonian, Mom.930 followers | Follow
Robert Foskett
Online retailer of space dressing up, astronaut food, space toys and clothing, and other cool space stuff, tweeting space news, anniversaries and resources!905 followers | Follow
Year of Science BC
Learn how science works, who scientists are & what they do, and why science matters in our everyday lives and our communities. We're on Facebook too.863 followers | Follow
Steven Shearin
I am a mad scientist. I shall conquer the world through shreading guitar licks and internet marketing.835 followers | Follow
Chris Morgan
Scientist & conservationist working on bears and other wildlife through imaginative films (like BEARTREK, PBS NATURE) and education projects (like GBOP)823 followers | Follow
Paul Halpern
Physicist and Science Writer. Author of 12 books, most recently: Collider: The Search for the World's Smallest Particles811 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.789 followers | Follow
LunarLanderChallenge
Northrop Grumman Lunar Lander Challenge, presented by X PRIZE, and prize money from NASA769 followers | Follow
AdvancedPhotonSource
World-class synchrotron x-ray science in energy, technologically important materials, health, economic competitiveness, security, and basic research.763 followers | Follow
AstronomyCalgary
Calgary's top astronomy organizations (TELUS Spark, RASC, RAO) collaborate on public astronomy events around the city. Join us on Facebook.com/AstronomyCalgary720 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.714 followers | Follow
Jason R. Hunter
Geek, network admin Interests: science, space, weather, meteorology, storm chasing, photography, technology, computing...712 followers | Follow
ZME Science
Bringing you the latest science news from every field, as well as features and environmental issues since 2007.712 followers | Follow
Initiative Science
Thinking outside of the beaker since 2001...Metropolitan Detroit's STEM Education and Research Engine!684 followers | Follow
Stargazer93
Our newest client has gotten 362 new Fans in 36 hours with our Custom Fan Pages. How many did you get?634 followers | Follow
Moray 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 7pm575 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.572 followers | Follow
lightsources.org
lightsources.org serves as a clearing house for light-source-related news, educational material, and user-related information.571 followers | Follow
Physicist Tv
Physics, science, humor, video, photos, caricature, documentary and more... We are waiting all of you.532 followers | Follow
Aberdeen Astro Soc
Encouraging astronomy in the Aberdeen area, we have great talks, offer advice and friendly meetings to let you get the most from the fascinating sky.526 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.526 followers | Follow
Susannah Hamm
Science & Technology Specialist at Cuyahoga County Public Library, CCPL, sci tech educator and blogger, gardening enthusiast, lover of nature and animals.520 followers | Follow
Journalof ExpBiol
The Journal of Experimental Biology is the leading journal in integrative and comparative physiology.507 followers | Follow
NEWS.com.auLHCWatch
Latest developments from around the web on the Large Hadron Collider from NEWS.com.au's Tech team483 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.477 followers | Follow
Davin Flateau
Astrophysics researcher, exoplanet scientist in training, writer, broadcaster, I play my music in the sun.473 followers | Follow
Focus Fusion Society
Boldly pursuing aneutronic fusion via Focus Fusion technology.471 followers | Follow
Seelye Martin
447 followers | Follow
Astronomia Dorking
Surrey's Dedicated Astronomy Centre - stocking telescopes, binoculars, books & accessories444 followers | Follow
RemoteSensingIce
The Center for Remote Sensing of Ice Sheets aims to predict the response of sea level change to the mass balance of ice sheets in Greenland and Antarctica.431 followers | Follow
Integrity Marketing
Social Media Marketing and SEO professional helping LOCAL and at a distance small business find their way in the social media world.399 followers | Follow
Heather Mahmood
DCE, music lover, party planner in the making, and video girl :)371 followers | Follow
paul doyle
Ireland based Computer scientist, but my passion is Space and Astronomy371 followers | Follow
InsideScience - ISNS
The authoritative source for original news content that explains the science behind the latest headlines.370 followers | Follow
Science Centric
Science Centric with the latest news in science, health and some technology336 followers | Follow
John Tulloch
Father, Policy Wonk, & Spacetweep. Viewed STS-131 Launch; #NASATweetups: STS-132 & 135 JSC and Ames Planet Hunters318 followers | Follow
Paczynski_Scope
Utilizing gravitational microlensing to explore our Galaxy and beyond. Established in memory of astronomer Bohdan Paczynski (1940-2007).299 followers | Follow
Tom Wagner
Cryosphere Program Scientist, NASA HQ. I help figure out how NASA can best study the earth's ice, glaciers, and polar regions to understand climate change.292 followers | Follow
Alexander Hreiz
Wake up, design/build/test/fly rocket engines @MastenSpace, gym, sleep, party on weekends. I love my life.275 followers | Follow
Alien Queen
260 followers | Follow
Dispenser of Truth
#Spaceastro Truthbot - truthsayer and defender of Ladies. See my website - I'm a celebrity!246 followers | Follow
David Reneke
Australian Astronomy Researcher, Writer, Presenter and Lecturer. Running Astronomy programs for schools. Free Astro-Space weekly newsletter www.davidreneke.com241 followers | Follow
Steven Leavitt
Fan of NASA and space exploration. Father of 2 boys. Red Sox Fan.230 followers | Follow
DiscoveryNow
221 followers | Follow
D*Con Space Track
Dragon*Con Space Track Director - rain We do Space Science not sci-fi space science.220 followers | Follow
Astro Phoenician
Moved from London, England Studied astrophysics Built optical & radio telecopes Advocate space program Work in global telecommunications #NASA #astronomy219 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.218 followers | Follow
Andre Aske
Gamer and Musician. Interested in Astrology and Astronomy/Space exploration. Generally a freethinker who's into all sorts of things.210 followers | Follow
Solar System Watch
I am a planetary scientist who also blogs about astronomy and the exploration of the Solar System.209 followers | Follow
Space Astrotivity
Tweet with love content about astronomy, space, science or physics. Creator @CynthiaY29208 followers | Follow
Bits Of Earth
We sell meteorites and natural minerals. Check back often! www.bitsofearth.com203 followers | Follow
Spaceflight Now Live
195 followers | Follow
James Pendergrass
new HR professional, husband, space junkie, tech junkie, scifi fan, history buff, BSU Bronco football fan179 followers | Follow
Roger Jones
Old Malvernian, atheist, amateur astronomer and genealogist, eBayer and nature lover. Retired retailer. My family tree at ...172 followers | Follow
Chad Jardine
Optimist, Entreprenuer, Marketer, Consultant, Tech Junkie, Husband and Father, Working on: Full Throttle, Uber-Saturated, Hyper Chromatic Human Being171 followers | Follow
Baruch Blumberg
159 followers | Follow
citizensci
Celebrating citizen scientists, who collect and share observational data about the world around them.156 followers | Follow
Temporal Shift
50 something web developer and general geek. Interested in Science/Astronomy.119 followers | Follow
ChileScope
113 followers | Follow
MASA Group
MASA is a global company developing cutting-edge Artificial Intelligence-based modeling & simulation software for defense, security and serious games markets113 followers | Follow
Astrobob Group
Amateur Astronomer, physics student, (astro)photographer, avid reader, Coffee drinker (French press way), Pipe smoker95 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.95 followers | Follow
Reuben Garcia
Going up is easy. Getting everything back the same way it went up, that's hard.75 followers | Follow
Grant Miller
Astronomer, husband, dad posting occasional basic astronomy tweets to edu'tain you. NASA/JPL Solar System Ambassador Volunteer, also on FB.65 followers | Follow
Jeremy Perez
14 followers | Follow
