Science Enthusiast 500

NASA

News from NASA. | We typically post in Eastern Time (ET). To convert to UT/GMT, add 5 hours (4 hours during Daylight Saving Time).
1,848,746 followers |

richardbranson

Founder of Virgin Group: @virgin
1,781,596 followers |

LeVar Burton

Actor, Director, Educator, Student
1,743,840 followers |

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 |

Chris Anderson

TED = Ideas worth spreading!
1,332,080 followers |

Mike Massimino

NASA astronaut, mission specialist for STS-125
1,263,952 followers |

AstrobiologyNAI

NASA Astrobiology Institute: we study life in the Universe!
927,574 followers |

William Shatner

Philanthropist, Actor, Producer, Father, Husband, and Grandfather
926,267 followers |

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 |

Deepak Chopra

756,169 followers |

Buzz Aldrin

Astronaut, Apollo XI and Gemini 12; Doctorate from MIT in astronautics, Korean War veteran (fighter pilot of 66 missions). photo by Don Camp
748,477 followers |

Discovery Channel US

News and much more from Discovery Channel U.S. Press info at press.discovery.com
746,522 followers |

WIRED Science

Science, space, energy and robot sharks with lasers. Hosted by the Wired Science team: @betsymason, @9brandon, @davemosher & @danielleventon.
621,056 followers |

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 them
609,769 followers |

Adam Savage

I play a scientist on TV. Obsessive maker of things. Host of Mythbusters on the Discovery Channel.
598,025 followers |

New Scientist

New Scientist is the world's leading science and technology weekly
477,771 followers |

CERN

CERN, the European Organization for Nuclear Research, is the biggest particle physics laboratory in the world.
458,480 followers |

Science Channel

Thought-provoking updates, insider news and more from Science...show your #nerdtweet pride!
390,826 followers |

Grant Imahara

Robot builder, modelmaker and television host on Mythbusters.
385,001 followers |

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 |

science

Science news from Writers Write's ScienceNewsBlog.com.
334,235 followers |

Neil deGrasse Tyson

Astrophysicist, American Museum of Natural History. Author: The Pluto Files, Death By Black Hole. Host: StarTalk Radio http://StarTalkRadio.net
326,665 followers |

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 |

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 @bmahersciwriter
312,380 followers |

Scientific American

Scientific American Magazine and online, over 165 years of science news
311,997 followers |

NASA Kennedy / KSC

Official Tweets from NASA’s Kennedy Space Center.
299,145 followers |

NYTimes Science

Science, Environment, Space and Cosmos News From NYTimes.com/Science
279,010 followers |

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 |

Science News

Daily news of science advancements from physics to medicine. Publisher @society4science. Moderator @hrothmann. See also @sciencenewskids.
272,863 followers |

BBC SciTech

Set up by @mario, supported by backstage.bbc.co.uk
264,637 followers |

NASA JPL

NASA Jet Propulsion Laboratory manages many of NASA's robotic missions exploring Earth, the solar system and our universe. Tweets from JPL's News Office.
264,354 followers |

DISCOVER Magazine

The best science magazine, in print and online
261,073 followers |

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 |

Guardian Science

News, comment, all that stuff from the Guardian's science, health and environment team
224,990 followers |

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 |

National Science Fdn

where discoveries begin [administered by @pffli]
221,470 followers |

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 interested
215,038 followers |

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 |

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 |

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 |

Google Maps

News, tips and candid tales of Google Maps
187,939 followers |

CassiniSaturn

Cruising around Saturn, its moons and the magnificent rings
179,710 followers |

MarsPhoenix

I dig Mars!
175,091 followers |

The Daily Galaxy

The Great Discoveries Channel: Sci, Space, Tech
170,934 followers |

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 |

Phil Plait

Astronomer, author, skeptic, father, punster.
164,243 followers |

TIME Healthland

Daily health and wellness news, including the latest research in medicine, nutrition, fitness, mental health, family, parenting and more
162,863 followers |

Digg Science

Top science stories as they roll across the homepage of Digg.com
148,170 followers |

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 |

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 |

Maria Popova

Interestingness curator and semi-secret geek obsessed with combinatorial creativity. Editor of @brainpickings. Bylines for @WiredUK @TheAtlantic @DesignObserver
141,113 followers |

PhysOrg Science News

Science news, Technology news. Physics, Space, Biology, Chemistry, Engineering, Math, Electronics, Nanotechnology, Materials, Computers, Health, Earth Science.
133,411 followers |

ChemistryWorld

Chemistry magazine bringing you the latest chemistry news and research every day
127,827 followers |

NASA Astronauts

Hear from all NASA's astronauts on Twitter, plus updates on astronaut activities here.
125,827 followers |

LRO_NASA

I am a NASA lunar mission, currently in orbit ~50 km (30 mi) above the Moon!
100,962 followers |

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 |

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 |

Ron Garan

NASA Astronaut, NEEMO 9, STS-124, Expedition 27/28
88,005 followers |

NMNH

Join us as we explore the natural world and our place in it. Comment policy: http://si.edu/Termsofuse#user-gen
81,516 followers |

stejules

News from the Web / Net, Twitter, Facebook and Social Media | Power User, Tester, Social Media Allrounder, µ-Blogger, YOUR Timeliner | 'A State Of Trance' fan!
75,632 followers |

NASA HQ PHOTO

NASA Headquarters Photo Department. Washington, DC
64,294 followers |

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 |

Climate Reality

Reality. It's not an opinion.
63,642 followers |

Harvard Research

Advances in research and scholarship from across Harvard University
57,885 followers |

space wanderer

many micro manipulations of speech
55,279 followers |

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 |

Robonaut

A humanoid robot designed to work side by side with humans, or go where the risks are too great for people.
52,242 followers |

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 |

Mark Kelly

51,919 followers |

Spaceflight Now

The best source for space news
50,595 followers |

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 more
49,048 followers |

ESA

European Space Agency, keeping you posted on European space activities.
42,646 followers |

MAKE

The twitter home of MAKE magazine.
41,037 followers |

NASA Goddard

Tweeting the best in NASA astronomy, Earth sciences and robotic exploration for the Goddard Space Flight Center.
41,021 followers |

Rick Oliver

⋆≡☼≡⋆ Great interest in: Astronomy ♣ Time pieces ♥ Paranormal ♠ Travel ♦ Outdoors ♣ Cats ♥ Music ♠ Wine ♦ Stamps & Coins. Having a Superior Time! ⋆≡☼≡⋆
40,211 followers |

SPACE.com

News coverage and conversation about space science, astronomy and exploration
38,848 followers |

Coast to Coast AM

Coast to Coast AM airs on more than 500 stations.
38,475 followers |

Science Magazine

The world's leading outlet for scientific news, commentary, and cutting-edge research.
38,426 followers |

Eco Preservation Soc

Eco Preservation Society: Conservation, Reforestation and Education. We bring it together. Get conected, Get Involved, Make a difference.
34,323 followers |

NASAEyesOnTheEarth

Being rocket scientists isn't enough...we're climate scientists too! News from NASA on all things climate.
33,975 followers |

Sierra Club

Since 1892, the Sierra Club has been working to protect communities, wild places, and the planet itself.
33,344 followers |

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 |

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/2skkH
32,910 followers |

NASA Tweetup

Follow us for announcements of and info about upcoming NASA Tweetups.
32,746 followers |

American Elements

Science Technology from American Elements- Nanotechnology, Robotics, AdvancedMaterials, AlternativeEnergy, Lasers, Military, GreenTechnology, LifeScience, Space
31,478 followers |

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 |

Science News

Science News for ordinary people. #followback
30,352 followers |

Hubble

Your official Twitter source for things relating to NASA's Hubble Space Telescope (HST).
30,134 followers |

NASA Ames

Ames Research Center (Silicon Valley) enables exploration through development of innovative technologies and interdisciplinary scientific discovery.
29,539 followers |

Scott Kelly

29,335 followers |

LiveScience

Science news covering top stories of the day in health, environment, animals, technology and space
29,169 followers |

SpaceX

Official Twitter for SpaceX, the Future of Space Travel. We design, build and launch the rockets and spacecraft that are revolutionizing space transportation.
27,444 followers |

Astronomy Now

The UK's best and longest running astronomy magazine!
26,890 followers |

NASA_Langley

NASA's Langley Research Center
25,821 followers |

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 |

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 |

Popular Mechanics

The best in technology, science, aerospace, DIY and gadget news.
24,690 followers |

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 |

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 |

msnbc.com - Tech/Sci

Technology & science news from msnbc.com
23,415 followers |

Discovery Space

The space topic hub for @Discovery_News. All things astronomy, physics, cosmology, spaceflight, NASA, exoplanets & more! (Administered by @astroengine.)
23,035 followers |

NASA_EDGE

The show that takes an inside and outside look at all things NASA!
22,688 followers |

Medical Imaging News

molecular imaging (radiology, CT, MRI, PET/CT, nuclear medicine) news in cancer, heart disease, dementia, and preventive medicine. http://www.usmolecular.com
22,400 followers |

FRONTLINE

Do the hazards of nuclear power outweigh the benefits? Watch Nuclear Aftershocks ow.ly/8nuCT w/ @milesobrien
21,811 followers |

Google Maps API

Use us to add maps to your site!
21,756 followers |

Sandy Magnus

21,394 followers |

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 |

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 Decorations
21,067 followers |

Wired Research

Research notes from @Wired Magazine's fact-checking team
20,977 followers |

A Blog About History

A Twitter about history, edited by Sevaan Franks.
20,876 followers |

NASA Dryden

The Dryden Flight Research Center is NASA's primary center for atmospheric flight research and operations.
20,799 followers |

Leland Melvin

Head of NASA Education, Astronaut flew on STS-122, 129
19,812 followers |

NASA Marshall News

News about NASA's Marshall Space Flight Center - Space Shuttle, Rockets, Science, Engineering, & Space Station Science.
19,763 followers |

WiSciBlog

The Wiley Life Sciences Blog @ http://wisciblog.com.
19,760 followers |

DiscoveryComm

News from Discovery Communications (NASDAQ: DISCA, DISCB, DISCK), the world's number one nonfiction media company
19,538 followers |

NASA Lunar Science

Moon science rocks.
19,096 followers |

Times Science

The inside track on science, health and the environment from The Times (of London), and the journalists who write it
18,527 followers |

Miles O'Brien

Science, technology, aviation and space journalist.
18,464 followers |

- NASA Wallops

18,109 followers |

John Brockman

Einstein, Gertrude Stein, Wittgenstein and Frankenstein
17,756 followers |

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 |

David E. Guggenheim

Marine scientist, conservation leader, sub pilot, speaker, educator, author. Sr. Fellow at The Ocean Foundation. Host, The Ocean Doctor http://oceandoctor.org
16,945 followers |

NewHorizons2015

The First Space Mission to Explore Planet Pluto and the Kuiper Belt
16,738 followers |

NASA Ares

America's next generation rocket
16,555 followers |

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 PBS
16,488 followers |

PBS Nature

Wednesdays at 8PM on PBS (check local listings). Tweets by the NATURE team.
16,304 followers |

Chandra Observatory

Chandra's ongoing mission is to study the X-ray Universe, including black holes, new stars, and clusters of galaxies
16,236 followers |

Science Mag News

The news staff at Science Magazine bring you the hottest science news and stories, served up every weekday.
16,154 followers |

NASA Goddard Images

@NASAGoddard is home to great pix, vids & visualizations. We Tweet the very best of them to you!
15,981 followers |

Ed Yong

Science writer, creator of Not Exactly Rocket Science, freelance journalist, geek, husband. http://flavors.me/edyong
15,235 followers |

MESSENGER

I am a NASA Discovery Mission to Mercury. First spacecraft to orbit Mercury.
15,038 followers |

David Bradley

Science news, views, interviews and tech talk from Science Writer David Bradley based in Cambridge, England, UK.
14,985 followers |

Space Center Fan

Dedicated fan of Kennedy Space Center, tweeting launch dates, tours, tickets & events in Florida, NASA, Space & more! Follows back
14,815 followers |

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 |

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 |

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 |

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 |

NASA Spinoff

Since 1976, NASA's Spinoff publication has featured over 1,750 NASA-derived technologies that improve your life.
13,268 followers |

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 |

EarthSky

A clear voice for science
13,102 followers |

ESA Planck

A European Space Agency (ESA) spacecraft to understand the origin and evolution of our Universe
12,717 followers |

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 |

JPL PlanetQuest

Keep track of the latest exoplanet news!
11,958 followers |

Astronomy Magazine

Astronomy informs, entertains, and inspires people who are interested in the science and hobby of astronomy.
11,783 followers |

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 Center
11,598 followers |

NASA ICE

Exploring Earth's sea ice, land ice, snow and permafrost.
11,548 followers |

astroparticle

Find here exciting astroparticle physics news!
11,446 followers |

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 |

Fermilab Today

Fermilab's mission is to advance the understanding of the fundamental nature of matter and energy.
11,211 followers |

Waclaw Koscielniak

Semiconductor Engineer in Silicon Valley. Updates from many interesting areas of life, some private.
11,147 followers |

Year of Astronomy

The Universe: yours to discover
10,829 followers |

Nat Geo magazine

The official journal of the National Geographic Society, inspiring people to care about the planet since 1888.
10,710 followers |

Armed with Science

U.S. Defense Department's science and technology blog. You've been SCIENCED!
10,630 followers |

WebPartner

Service to find the latest news and updates and Tweet. Build brand presence and following.
10,545 followers |

The Underwire

Wired.com's culture blog
10,513 followers |

rawrGG

All things gay and geek
10,228 followers |

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 |

symmetry magazine

Dimensions of particle physics
9,834 followers |

TweetMeme Science

Tracking Twitter Science Memes
9,785 followers |

Museum of Science

Follow us for updates and special offers on exhibits and shows, fun science facts, and breaking news.
9,761 followers |

Physics Today

Physics Today is the world's most popular physics magazine.
9,576 followers |

NOAAOceanToday

NOAA Ocean Today is a NOAA/Smithsonian partnership - Follow us for the latest ocean news
9,365 followers |

L.A. Times Science

Science and medical news from @latimes. See latimes.com/twitter for more news streams.
9,317 followers |

NASA SDO

The Solar Dynamics Observatory, NASA's newest eye on the Sun!
9,188 followers |

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 |

Spacevidcast

Making Space Commonplace! New media company looking to the stars.
8,939 followers |

NASA CoLab

NASA CoLab connects communities inside and outside NASA to collaborate.
8,910 followers |

NASA360

8,899 followers |

Am Geophysical Union

Official account of the American Geophysical Union, the world's largest organization of Earth and space scientists.
8,841 followers |

Molly Duggan

The possibilities are endless...
8,627 followers |

Discovery Channel

Bringing you the best of Discovery in 140 characters or less.
8,506 followers |

WI Astronomy

A Wisconsin based Space and Astronomy news public outreach website. Come along on our 5 year mission.
8,455 followers |

OpenStreetMap

OpenStreetMap is the free editable map of the whole world. It is made by people like you.
8,162 followers |

Biological Science

The latest updates & news from the books, journals & online resources available from the Wiley-Blackwell Biological Sciences subject.
8,022 followers |

SOFIAtelescope

Stratospheric Observatory For Infrared Astronomy
7,997 followers |

BerkeleyLab

Lawrence Berkeley National Lab is an @ENERGY national lab. Tweets by Berkeley Lab's Public Affairs Department.
7,894 followers |

waybis

Mishmash of Space Exploration, Astronomy, Space Science, Cosmology and SciFi topics
7,872 followers |

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 |

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 |

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 |

Daily Planet

Weeknights 7&11 ET on Discovery Channel
7,547 followers |

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 |

NASAFermi

NASA's Fermi Gamma-Ray Space Telescope (formerly GLAST) studies the extreme energy universe!
7,364 followers |

Astronomy Update

7,139 followers |

Mike Brown

Astronomer, planet hunter, Pluto killer. Finger-wrapped dad.
7,073 followers |

Encyclopedia of Life

Global access to knowledge about life on Earth. Personal, accessible, engaging and free. Come visit at www.eol.org
7,030 followers |

Neuros Technology

We Bring Internet Video to the TV with an open set-top box
7,026 followers |

Mark Browne

Experienced physician executive,consultant, bridging healthcare quality and finance
6,973 followers |

Telegraph Science

Science news and analysis from The Telegraph
6,749 followers |

Richard Garriott

Computer Gaming Pioneer and Private Astronaut (1st 2nd Generation)
6,717 followers |

KSC Mobile Command

Providing live launch-day updates on the fly!
6,559 followers |

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 |

AIP Publishing

Highly cited, highly respected, and highly relevant, AIP's archival journals are the cornerstone of many physics collections.
6,529 followers |

Dr. Ian O'Neill

Discovery News Space Producer. Recovering British solar physicist. Enjoys good beer, prefers tea. Toast & butter advocate. Hairy Atheist. 2012 doomsday debunker
6,454 followers |

Space Future

Space is the future!
6,376 followers |

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 |

Astronomy

Astronomy news, photos and more!
6,351 followers |

WIREs Nanomedicine

Authoritative encyclopedic review publication addressing key topics from the perspectives of medicine, biology, physics, chemistry, & engineering. 2010 IF 2.189
6,337 followers |

J. Craig Venter

Genome and Synthetic Life Scientist
6,324 followers |

Brookhaven Nat'l Lab

Brookhaven Lab delivers science-based solutions for the nation's energy, environmental and security needs.
6,255 followers |

Brain Science

6,237 followers |

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 |

HarvardScience

The central portal for medicine, health, science, engineering, technology, and public health coming from the schools, and affiliates of Harvard University
6,127 followers |

galaxyzoo

It's Galaxy Zoo!
6,122 followers |

Jen Scheer

Former Space Shuttle technician. Artist, photographer, inventor. Space Tweep Society founder, @YurisNight & @FragileOasis contributor, 2010 Shorty Award winner.
6,112 followers |

e! Science News

Science News updated by artificial intelligence that scans all major sources around the web
5,994 followers |

US LHC

News from the U.S. community participating in the Large Hadron Collider project
5,989 followers |

PhysOrg Physics News

PhysOrg.com: Physics, Nanotechnology, Materials News Stories
5,982 followers |

Science and the City

The public gateway to the New York Academy of Sciences.
5,981 followers |

Interactions.org

News from the world's particle physics laboratories.
5,744 followers |

JetLab

The latest news from the Jet Propulsion Laboratory. This Twitter is a service of SpaceLinks.net: http://spacelinks.net/
5,664 followers |

SDO for Educators

Supporting educators through social media.
5,548 followers |

NASA_MAAT

5,498 followers |

Military Technology

Offering up three specialist sites covering the army, naval and airforce military sectors, which supply a defence portfolio of relevant information and projects
5,463 followers |

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 |

SpaceX Missions

Official play-by-play for SpaceX webcasts. For regular updates, follow SpaceX @SpaceXer.
5,303 followers |

Nanotechnology

Nanotechnology News as it Happens
5,254 followers |

Space Tweep Society

The official Twitter account of the Space Tweep Society. Posting news & updates on society happenings. #STwS #spacetweeps
5,166 followers |

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 @wfiu
5,083 followers |

FQXi Physics

Exploring the foundations of physics and cosmology.
5,071 followers |

APPEL

APPEL supports NASA’s mission by promoting individual, team, and organizational excellence in program/project management and engineering.
5,015 followers |

Scienceline

Science, health and environmental stories from New York University journalism students.
4,971 followers |

CERN en français

Le CERN : le plus grand laboratoire de physique des particules du monde
4,955 followers |

PRamerindmuseum

The National Museum of the American Indian in New York!
4,949 followers |

Migratory Bird Ctr

Fostering greater understanding, appreciation, and protection of the grand phenomenon of bird migration
4,947 followers |

The Quantum Activist

There's a revolution going on in science. A genuine paradigm shift.
4,923 followers |

Jeff Foust

Space industry analyst, writer, blogger, baseball fan. Links not endorsements; opinions my own.
4,883 followers |

Fermilab Tevatron

High-energy particle accelerator providing proton-antiproton collisions to the CDF and D0 experiments
4,830 followers |

UFO Guy

UFO Enthusiast, ET's Best Friend, Crop Circle Fanboy, Likes Sci-Fi Movies and Long walks down along the beach.
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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 |

CBC Tech and Science

Technology and science news and the Tech Bytes blog from CBCNews.ca.
4,583 followers |

Florida Today Space

FLORIDA TODAY's space team covers NASA and the space industry around the clock from Kennedy Space Center.
4,538 followers |

peter seelig

Artist / Künstler - Blind drawings created during performances offers the basis for my artistic experiments in paintings and digital art
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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 |

Daniel Fischer

All things astronomy and space (and then some) - in tiny bits and pieces but mostly with links to more ... :-)
4,376 followers |

Genetic Alliance

nonprofit network transforming health through genetics. openness in health systems. advocacy. empowerment. education. dialogue. informed decisions. access.
4,344 followers |

Dr. David Warmflash

Astrobiologist, science communicator, US lead investigator on Phobos-LIFE, physician, scientific pantheist, likes ancient Phoenicia-Israel & Greece
4,338 followers |

Kate AG

Freelance radio geek/producer/journalist/social media-type. I like doing cool stuff like visiting Nasa, and taking pictures. All views mine, not employers'.
4,263 followers |

USGS Earthquake SoCa

A Twitter feed of the USGS Earthquake Notification Service for all quakes over 2.5 in Southern California
4,198 followers |

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 |

Digg (Science)

4,104 followers |

Future Aware

Focused on future technologies and their impact on humanity
4,012 followers |

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 |

geocommons

A community for anyone to share geographic data, maps and analysis. Powered by @geoiq!
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Phil Harrison

Educationist, Strategist http://paper.li/PhilHarrison/1326242668 Semiosphereologist
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Singularity Tech

Tweeting future trends in science and technology.
3,765 followers |

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 #SciWeek
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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 |

Science Oxford

Promoting science and enterprise in Oxfordshire and beyond!
3,662 followers |

DailyMe Science

The Latest Science, Space and Environmental News from Aggregated Leading Sources.
3,661 followers |

quippd Science News

3,618 followers |

Geology.com News

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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 |

NanoSailD

Deploy NASA's first solar sail leveraging work by MSFC approved under the SMD In-Space Propulsion Program
3,451 followers |

SmithsonianPods

The latest museum podcasts. Covering everything from Asian Art to X-ray Astronomy!
3,366 followers |

Christina Reed

Discovery News Earth and environmental science news website
3,324 followers |

RobertPearlman

Editor and Founder of collectSPACE.com: The Source for Space History and Artifacts, and 2009 Space Camp Hall of Fame inductee
3,292 followers |

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 |

Story Musgrave

thinker, astronaut, poet, landscape architect, doctor, speaker, marine, artist, professor, innovator
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Ars Science News

Science news and analysis from Ars Technica
3,214 followers |

Weird Science

As seen in the blogosphere! A Swedish dream team of film/tv critics
3,205 followers |

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 |

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 |

S Pete Worden

Center Director, NASA Ames
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watching archaeology

Keeping tabs on the world of archaeology
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hubble

3,098 followers |

TrekToday

Bringing you daily Trek news for over ten years
3,091 followers |

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 |

PharmaSat

The PharmaSat experiment and flight system are designed to measure the influence of microgravity upon yeast resistance to an antifungal agent.
3,066 followers |

NASA Nebula

NASA's Cloud Computing Platform
3,057 followers |

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 cinema
3,055 followers |

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 |

Michael Woods

News from the American Chemical Society, the world's largest scientific society
3,000 followers |

journowl

Wildlife and environmental news/information to promote conservation and link ecologically-minded individuals. Founder of Burrowing Owl Conservation Network.
2,983 followers |

Centennial Challenge

Finding innovative solutions to NASA's technical challenges through prize competitions open to the citizen inventor.
2,951 followers |

Pete

Electronic Engineering student & ISS reporter for @NASASpaceflight.com. Hopeful RAF/Army/Navy pilot. My ultimate goal in life is to become an Astronaut!
2,897 followers |

LunarOrbiter

Providing New Imagery and Data From the 1960's NASA Lunar Orbiter Missions For 21st Century Exploration
2,884 followers |

Andy Hudson-Smith

Director of CASA University College London
2,853 followers |

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 education
2,667 followers |

Haley & Ecogeek Crew

We are biologists, greenies and filmmakers that are dedicated to education!
2,664 followers |

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 |

Archaeology Tools

Archaeology tools and trowels. Largest Global Supplier for professional and amateur Archaeologists.
2,610 followers |

Earth News ReTweeted

A ReTweet wildlife & environment news service associated with @Earth_News
2,587 followers |

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 |

scientific wisdom

Science quotes - Wisdom Quotes to challenge and inspire.
2,503 followers |

Mark Changizi

Author of VISION REVOLUTION and HARNESSED: How Language and Music Mimicked Nature and Transformed Ape to Man. Director of Human Cognition, 2AI
2,413 followers |

Free Documentaries

Watch documentaries online for free BBC, PBS, HBO, Showtime, History Channel, National Geographic, Biographies, Animal Planet. unhub.com/documentaries
2,357 followers |

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 |

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 |

PhysOrg Chemistry

PhysOrg.com: Chemistry News Stories
2,262 followers |

collectSPACE

The Source for Space History & Artifacts
2,251 followers |

GeneticEngineering

All About Genetic Engineering
2,213 followers |

follow Astronaut

Follow me! I'm interstellar!
2,212 followers |

Chris Calubaquib

College student/Astronomy/Photography/Space Enthusiast/Music/Arts/Tech... Veteran of #NASAtweetups: #STS130 JSC & #STS132 KSC, #STS135 #SVP & #NASAAmes! ;D
2,205 followers |

Tony

The man who built R2-D2 for Star Wars
2,202 followers |

Scitable

Scitable by Nature Education is a collaborative learning space for science students, faculty and life-long learners.
2,198 followers |

White Label Space

White Label Space is a brandless space tech startup & Official Google Lunar X PRIZE competitor
2,190 followers |

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 |

INTECH

Hands-on Science Centre and Planetarium. Come and explore! Tweeted by Jenny the Planetarium Manager.
2,157 followers |

Professor Astronomy

Astronomy researcher at the University of Texas at Austin
2,122 followers |

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 waffler
2,098 followers |

lifesciencearticles

2,064 followers |

Susan Niebur

Women make up half the bodies in the solar system -- why not half the scientists?
1,940 followers |

Cort Sims

Retired Archaeologist interested in archaeology, history, Civil War, technology, science, math, politics and people with similar interests and a sense of humor.
1,904 followers |

kgrifant

science journalist/tech blogger, interested in robotics, astronomy, fiction and science fiction
1,893 followers |

RoboGames

The world's largest robot event. If it's a robot, we play with it.
1,824 followers |

Astronomy Telescopes

All about astronomy, telescopes, the universe and orion!
1,821 followers |

Cambridge NanoTech

Atomic Layer Deposition science, systems, research & collaboration.
1,813 followers |

RoboticsBlog.Org

We Like Robots
1,808 followers |

SpaceWire

The latest space news, from astronomy to space exploration! Featuring news from Space.com, CNN and MSNBC. A service of SpaceLinks.net: http://spacelinks.net/
1,789 followers |

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 |

Science at Life

Look at life differently. Behind the scenes at the Centre for Life.
1,766 followers |

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 |

Jason_1_Project

JPL Jason-1 Ocean Surface Topography Project
1,743 followers |

ZERO-G

a privately held space entertainment and tourism company
1,730 followers |

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.org
1,728 followers |

Microscopy News Blog

The latest microscopy research, news, events and new products. Authored by Nancy Lamontagne.
1,713 followers |

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 |

Microscopy News

Product & Press Portal for all Aspects of Microscopy & Accessories - We spread your news!
1,656 followers |

Nuffield Bioethics

Exploring ethical issues in biology and medicine.
1,634 followers |

Mapsandearth

Google Earth lover, Google StreetView, Sky, Mars, Space, Join our group http://www.flickr.com/groups/859024@N23/
1,633 followers |

NASATechGateway

NASA Langley Research Center - Technology Transfer, SBIR/STTR & Partnerships
1,631 followers |

e-ScienceTalk

reporting on grid and high performance computing across Europe (previously known as GridTalk)
1,627 followers |

Dr. Heather Good

Heather Good EdD is editor of http://FoundonMars.com Attendee of STS-134 Tweetup!!
1,627 followers |

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 |

MicrobiologyBytes

The latest news about microbiology
1,557 followers |

Diamond Light Source

Diamond Light Source is the UK national synchrotron facility.
1,537 followers |

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 |

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 |

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 |

ASTRON -Mike Garrett

ASTRON is the Netherlands Institute for Radio Astronomy. Our mission is to make discoveries in radio astronomy happen!
1,446 followers |

Wiley Life Science

The latest news, updates and resources from Wiley-Blackwell's Life Sciences Team!
1,427 followers |

Talking Space

The Talking Space Podcast: A Free and Open Exchange of Ideas and Opinions on All Things Space.
1,406 followers |

GetOutdoorsFL

Engaging communities, families and individuals in outdoor experiences to achieve healthier lifestyles and sustain Florida’s natural resources
1,393 followers |

Douglas Messier

Managing editor, Parabolicarc.com. Writer. Editor. Blogger. Busy.
1,392 followers |

Lowell Observatory

A private, non-profit institution dedicated to astronomical research and outreach.
1,391 followers |

Utopic

U topic, I topic, We all topic
1,388 followers |

Dan Piponi

I used to write software for visual effects. These days I work for Google.
1,386 followers |

WVIZ/PBS ideastream

Public television serving Cleveland and Northeast Ohio
1,383 followers |

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 |

Nathan Bergey

Open source rocket scientist, open science strategist. Made the ISS Notify lamp and other cool space things.
1,369 followers |

Martian Soil

All the fresh dirt on the planet Mars. Curated news stories lovingly crafted by Joost Schuur (@joostschuur).
1,368 followers |

Corax Says

Be In The Know, Educate, Learn, Re-Educate...
1,367 followers |

HYTHIRM

NASA Hypersonic Thermodynamic IR Measurement(HYTHIRM)..NASA team that monitors & captures data on the Shuttle during re-entry..staging from MCC & across CONUS.
1,364 followers |

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 |

GridPP

News from the GridPP website
1,326 followers |

Project Galileo

On-line telescope for schools across the UK For more info, visit: http://projectgalileo.org.uk Squidoo Lens: http://is.gd/nTQP
1,300 followers |

PreSat

Demonstrate / Validate Performance of NASA-Ames 2nd Generation Modular Triple CubeSat Nanosatellite Platform
1,291 followers |

battlebots

The Box is locked, the lights are on, it's robot fighting time!
1,288 followers |

Chandrayaan1

I am India's first mission to the moon. This is the unofficial twitter feed.
1,288 followers |

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 NASATweetup
1,274 followers |

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 |

_mark

Film ▪ Video ►Art ▪ Music ► Writing ► Dev ▪ Design ► CGI ▪ CAD ► Nanotech ► Robotics ► Astonomy ► Physics ► SciFi ▪ Fantasy ► Dreams ▪ Animal
1,271 followers |

science.TV

sign up to the future of science education at www.science.tv
1,239 followers |

Stephen Braham

Quantum Cosmologist turned Arctic-going IT-exploring Rocket Scientist
1,231 followers |

CharlesSpillane

Professor (Scientist, Genetics & Biotechnology Research), National Uni of Ireland, Galway. SFI Investigator. Science Gallery Leonardo.
1,224 followers |

timohannay

Managing Director, Digital Science, Macmillan Publishers
1,222 followers |

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)
1,217 followers |

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 Passion
1,213 followers |

tiff

I'm a rocket scientist looking for a job. I'm a space geek, Bears fan, and lover of the mountains. If you need me on the weekends, look in the wilderness.
1,209 followers |

b.side

Stuff you wish you knew about Niagara Falls
1,198 followers |

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. starwars
1,194 followers |

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 |

AAPT

AAPT was established in 1930 with the fundamental goal of ensuring the dissemination of knowledge of physics, particularly by way of teaching.
1,179 followers |

Ashiya

Then: model turned archaeologist. Later: part of the Geni/Yammer team. Now: producing. Lover of music, art, food, wine, film, books, writing, politics, travel.
1,166 followers |

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 |

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 |

spacenibber

I love space, I love nibipedia.
1,142 followers |

Montse

Space geek, physics geek, nerd, #spacetweep, and book lover living on the internet. Space Camp and Advanced Academy. STS-133 (both!) and STS-135.
1,134 followers |

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 |

Science Outreach

The International Society for Science Outreach is an organization serving those who bridge research and public understanding of science.
1,094 followers |

BioTek Instruments

BioTek Instruments designs, manufactures and sells Microplate Instrumentation and Software worldwide.
1,078 followers |

Gulf Coast Exploreum

Mobile's #1 Family Attraction!
1,067 followers |

ESA

ESA: Europe's space agency! Content provided unofficially by ESA for personal use. Images (C) ESA unless otherwise noted. Not for commercial use.
1,066 followers |

Joshua V. Nelson

Space Jack of All Trades
1,065 followers |

The Cosmos Review

space & poetry quotes - literary magazine celebrating and commemorating humankind’s relationship with the cosmos through poetry. Space Frontier Foundation
1,065 followers |

ICESat

I'm a laser altimeter satellite, that orbited the Earth for 7 years to help understand how the world's ice sheets are changing.
1,065 followers |

Our Dynamic Earth

The Mother Earth of all Adventures
1,055 followers |

Cariann Higginbotham

Just an average girl interested in space and having fun. Hopefully together! Helping my husband in Making Space Commonplace.
1,051 followers |

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 world
1,035 followers |

Ryan Anderson

I study Mars and shoot things with lasers. I also read and blog and write.
990 followers |

Jim Elvidge

author of The Universe - Solved!, entrepreneur, truth seeker, hack musician
988 followers |

aBitOfScience_com

Top Science news story of the day, automatically aggregated from many of the world's news
966 followers |

Marcia

#Spacetweep. I love NASA, space art, space history, Macs, and hiking with my English Shepherd, Kodiak.
940 followers |

Michèle Ledgerwood

Science, infectious diseases, humanitarian ops, ICT4[x], health and security. Writer, Editor, Globetrotter, Linguist, Oenophile, Live Music Buff, Nikonian, Mom.
930 followers |

Larry O'Hanlon

Communications officer for the W. M. Keck Observatory
925 followers |

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 |

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 |

NASAKepler Fan

I look for ET's home
848 followers |

Steven Shearin

I am a mad scientist. I shall conquer the world through shreading guitar licks and internet marketing.
835 followers |

Chris Morgan

Scientist & conservationist working on bears and other wildlife through imaginative films (like BEARTREK, PBS NATURE) and education projects (like GBOP)
823 followers |

Dr. David Livingston

Dr. David Livingston, Host of The Space Show talk show
822 followers |

Paul Halpern

Physicist and Science Writer. Author of 12 books, most recently: Collider: The Search for the World's Smallest Particles
811 followers |

Barstein

Science based news journalist in Oslo. Prefers (aero)space, physics and biology.
807 followers |

tossey

Environmental educator, photographer, writer, tech geek, outdoors girl, traveler.
805 followers |

Stephen

801 followers |

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 |

qtakroori

776 followers |

LunarLanderChallenge

Northrop Grumman Lunar Lander Challenge, presented by X PRIZE, and prize money from NASA
769 followers |

AdvancedPhotonSource

World-class synchrotron x-ray science in energy, technologically important materials, health, economic competitiveness, security, and basic research.
763 followers |

Brian Berger

Space News Deputy Editor
734 followers |

AstronomyCalgary

Calgary's top astronomy organizations (TELUS Spark, RASC, RAO) collaborate on public astronomy events around the city. Join us on Facebook.com/AstronomyCalgary
720 followers |

OnOrbit ColabSpace

Collaboration for the Space Community. Join us!
716 followers |

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 |

Jason R. Hunter

Geek, network admin Interests: science, space, weather, meteorology, storm chasing, photography, technology, computing...
712 followers |

ZME Science

Bringing you the latest science news from every field, as well as features and environmental issues since 2007.
712 followers |

William Harwood

CBS News Space Updates
700 followers |

Next Step in Space

Show Your Support for Commercial Spaceflight!
686 followers |

Initiative Science

Thinking outside of the beaker since 2001...Metropolitan Detroit's STEM Education and Research Engine!
684 followers |

J. Hyatt

Eureka Springs Astronomical Society. Currently constructing my observatory. Skeptic by nature. Amateur astronomer astronomy blogger
663 followers |

Stargazer93

Our newest client has gotten 362 new Fans in 36 hours with our Custom Fan Pages. How many did you get?
634 followers |

Radley Physics

Radley College Physics Dept
606 followers |

JupiterToday

News about Jupiter and its moons. A service of @SpaceRef.
596 followers |

Nic Fleet

So this is the sort of thing you life forms enjoy is it? I ask merely for information... Be warned I also tweet as @NewburyAstro!
595 followers |

The Great Look Up

Star-gazing for the rest of us...
591 followers |

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 7pm
575 followers |

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 |

lightsources.org

lightsources.org serves as a clearing house for light-source-related news, educational material, and user-related information.
571 followers |

Space or Die

Save the planet by leaving it
562 followers |

Physicist Tv

Physics, science, humor, video, photos, caricature, documentary and more... We are waiting all of you.
532 followers |

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 |

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 |

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 |

Journalof ExpBiol

The Journal of Experimental Biology is the leading journal in integrative and comparative physiology.
507 followers |

Paul

496 followers |

Swansea Astro Soc

Swansea Astronomical Society
485 followers |

NEWS.com.auLHCWatch

Latest developments from around the web on the Large Hadron Collider from NEWS.com.au's Tech team
483 followers |

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 |

Davin Flateau

Astrophysics researcher, exoplanet scientist in training, writer, broadcaster, I play my music in the sun.
473 followers |

Focus Fusion Society

Boldly pursuing aneutronic fusion via Focus Fusion technology.
471 followers |

Richard Lubbock

extinct volcano, patchwork theorist, soi-disant luftmensch
456 followers |

Seelye Martin

447 followers |

Astronomia Dorking

Surrey's Dedicated Astronomy Centre - stocking telescopes, binoculars, books & accessories
444 followers |

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 |

Science Congress

Quality Events & Congress Organizer.
417 followers |

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 |

Science Buddies

Free science resources to further K-12 science literacy.
399 followers |

AIMEC:3

I am a REAL Robot being developed at the MABB's lab in the UK
373 followers |

Heather Mahmood

DCE, music lover, party planner in the making, and video girl :)
371 followers |

paul doyle

Ireland based Computer scientist, but my passion is Space and Astronomy
371 followers |

InsideScience - ISNS

The authoritative source for original news content that explains the science behind the latest headlines.
370 followers |

CarnivalOfSpace

The weekly Carnival of Space
359 followers |

Astro Naut

Inspiring, Exploring, Learning...It's My Mission!
357 followers |

TaviG - AstrocastTV

Producer/Reporter for Astrocast.TV's Our Night Sky
339 followers |

Science Centric

Science Centric with the latest news in science, health and some technology
336 followers |

John Tulloch

Father, Policy Wonk, & Spacetweep. Viewed STS-131 Launch; #NASATweetups: STS-132 & 135 JSC and Ames Planet Hunters
318 followers |

Paczynski_Scope

Utilizing gravitational microlensing to explore our Galaxy and beyond. Established in memory of astronomer Bohdan Paczynski (1940-2007).
299 followers |

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 |

jeffa00

Developer/DBA. User Group Leader. Webcomic maker.
290 followers |

The ASG

Astronomical Society of Glasgow. We have lectures, observing sessions and public outreach events in and around Glasgow
283 followers |

Alexander Hreiz

Wake up, design/build/test/fly rocket engines @MastenSpace, gym, sleep, party on weekends. I love my life.
275 followers |

Young Stargazers

The under 16s section of the Society for Popular Astronomy
265 followers |

Alien Queen

260 followers |

Dispenser of Truth

#Spaceastro Truthbot - truthsayer and defender of Ladies. See my website - I'm a celebrity!
246 followers |

Igor Stamenkovic

Engineer, science lover, amateur astronomer, lazy reader...
241 followers |

John

We have a choice: either to perish with everyone we love or to build homes elsewhere in the solar system. If we love them, let us give our children a future.
241 followers |

David Reneke

Australian Astronomy Researcher, Writer, Presenter and Lecturer. Running Astronomy programs for schools. Free Astro-Space weekly newsletter www.davidreneke.com
241 followers |

EyesontheSkies

The official book of the IYA 2009
240 followers |

The Moon

The Great Luna Herself
237 followers |

Steven Leavitt

Fan of NASA and space exploration. Father of 2 boys. Red Sox Fan.
230 followers |

Vanessa

astro, rock chick, space geek, tech lover, young astro, muser, space twerp. i'm just a little girl with a big dream
224 followers |

DiscoveryNow

221 followers |

KQEDPlus

Please follow @KQED for more updates about the great programming you love on KQED Plus.
220 followers |

D*Con Space Track

Dragon*Con Space Track Director - rain We do Space Science not sci-fi space science.
220 followers |

Astro Phoenician

Moved from London, England Studied astrophysics Built optical & radio telecopes Advocate space program Work in global telecommunications #NASA #astronomy
219 followers |

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 |

Andre Aske

Gamer and Musician. Interested in Astrology and Astronomy/Space exploration. Generally a freethinker who's into all sorts of things.
210 followers |

Solar System Watch

I am a planetary scientist who also blogs about astronomy and the exploration of the Solar System.
209 followers |

Space Astrotivity

Tweet with love content about astronomy, space, science or physics. Creator @CynthiaY29
208 followers |

Bits Of Earth

We sell meteorites and natural minerals. Check back often! www.bitsofearth.com
203 followers |

Epsilon Aurigae

The 2009-2011 eclipse cycle
202 followers |

Space.Org

Connecting Advocates for Human and Machine Space Exploration and Colonization
200 followers |

Spaceflight Now Live

195 followers |

AstroBebop

videos on space exploration, astronomy, aeronautics and robotics
185 followers |

James Pendergrass

new HR professional, husband, space junkie, tech junkie, scifi fan, history buff, BSU Bronco football fan
179 followers |

Roger Jones

Old Malvernian, atheist, amateur astronomer and genealogist, eBayer and nature lover. Retired retailer. My family tree at ...
172 followers |

Chad Jardine

Optimist, Entreprenuer, Marketer, Consultant, Tech Junkie, Husband and Father, Working on: Full Throttle, Uber-Saturated, Hyper Chromatic Human Being
171 followers |

Baruch Blumberg

159 followers |

citizensci

Celebrating citizen scientists, who collect and share observational data about the world around them.
156 followers |

VSI Labs

VSILabs R&D feed - exploring the development of VSI's Robotic Human Surrogates – welcome to Life 2.0!
156 followers |

Cheryl

Follower of science & technology. My blog, Chemistry on Your Table, on the technology of food: http://chemtable.wordpress.com/
149 followers |

Bob Francis

I'm a sci fi fiend :)
141 followers |

Temporal Shift

50 something web developer and general geek. Interested in Science/Astronomy.
119 followers |

Science Dome- Kyle

If you don't look up, look out!
116 followers |

ChileScope

113 followers |

MASA Group

MASA is a global company developing cutting-edge Artificial Intelligence-based modeling & simulation software for defense, security and serious games markets
113 followers |

Astrobob Group

Amateur Astronomer, physics student, (astro)photographer, avid reader, Coffee drinker (French press way), Pipe smoker
95 followers |

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 |

Twin Cities Science

Twin Cities Regional Science Fair affiliated with ISEF
94 followers |

Science Topsy

Tracker for popular science links
92 followers |

Reuben Garcia

Going up is easy. Getting everything back the same way it went up, that's hard.
75 followers |

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 |

Jim Geach

I am an extragalactic astronomer and wannabe philanthropist, based at McGill University, Montreal. Views my own.
60 followers |

Seeing Life

See the amazing way that Light is changing our lives!
32 followers |

Astrokit*

A networking platform for science communication, education and public engagement through space science
15 followers |

Jeremy Perez

14 followers |

Bat Guys

Canada's largest bat removal and exclusion specialists. A pioneer in bat work since 1989. Bat guano/feces removal and attic restoration. Guaranteed!
7 followers |

Rick K

I am a retired chemist, an amateur photographer and a creative writer.
5 followers |

Curated by Cynthia Yildirim

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Those that have a great love of science, astronomy, physics, and respect of the space program.

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