Science
Asteroid Watch
JPL's Near Earth Object Office coordinates NASA's efforts to detect, track & characterize potentially hazardous asteroids & comets that could approach Earth.874,883 followers | Follow
Neil deGrasse Tyson
Astrophysicist, American Museum of Natural History. Author: Space Chronicle, The Pluto Files,. Host: StarTalk Radio http://StarTalkRadio.net494,303 followers | Follow
NYTimes Science
Science, Environment, Space and Cosmos News From NYTimes.com/Science318,491 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.317,555 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.219,040 followers | Follow
CassiniSaturn
Cruising around Saturn, its moons and the magnificent rings194,567 followers | Follow
National Geographic
National Geographic - Since 1888, we've traveled the Earth, sharing stories with each new generation. See amazing images captured from around the world.159,910 followers | Follow
Lissa Rankin, MD
MD, Hay House author, artist, OwningPink.com founder, rollercoaster buff. Helping you diagnose the REAL reason you're sick or suffering so you can heal yourself139,069 followers | Follow
NASA Astronauts
Hear from all NASA's astronauts on Twitter, plus updates on astronaut activities here.136,275 followers | Follow
Stephen Hawking
Theoretical physicist and Lucasian Professor of Mathematics at the University of Cambridge. Likes: black holes, cats and watching TV.127,916 followers | Follow
carlzimmer
Science writer: champion of underappreciated life forms. New book: Science Ink: Tattoos of the Science Obsessed http://bit.ly/scienceinkbook104,764 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.55,830 followers | Follow
LiveScience
Science news covering top stories of the day in health, environment, animals, technology and space42,948 followers | Follow
L.A. Times Science
Science and medical news from @latimes. See latimes.com/twitter for more news streams.12,046 followers | Follow
Pamela L. Gay
Communicating astronomy and life in academia 1 sidereal day at a time.10,475 followers | Follow
Salon Naturals
We believe in your right to know who we are and what we do. We do right so we can feel good about telling you.5,230 followers | Follow
Eric Pooley
SVP for strategy and communications at Environmental Defense Fund, author of The Climate War3,481 followers | Follow
