Astronomy
Asteroid Watch
JPL's Near Earth Object Office coordinates NASA's efforts to detect, track & characterize potentially hazardous asteroids & comets that could approach Earth.871,402 followers | Follow
New Scientist
New Scientist is the world's leading science and technology weekly554,560 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.405,076 followers | Follow
♥s photography!
We make photography (more) awesome! • As seen in The New York Times, ReadyMade, Wall Street Journal, & CBS Early Show!237,025 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.216,743 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.214,062 followers | Follow
CassiniSaturn
Cruising around Saturn, its moons and the magnificent rings193,284 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.152,382 followers | Follow
Curiosity Rover
NASA's next mission to Mars. I'm currently en route to the Red Planet. Arrival anticipated Aug. 5, 2012.100,472 followers | Follow
Robert Currey
astrocartographer, astrologer, consultant, writer, software programmer, presenter - founded Equinox 1981, Astrology Shop, Covent Garden 198971,147 followers | Follow
Twisst ISS alerts
Twisst sends you a tweet when the international space station (ISS) will be visible at your location. Created by journalist/webdeveloper @tjaap. #science #space46,642 followers | Follow
Bob Richards
Space entrepreneur. Orphan of Apollo. A Founder of the International Space University, Singularity University, SEDS, Odyssey Moon & Moon Express (CEO).37,774 followers | Follow
NASAEyesOnTheEarth
Being rocket scientists isn't enough...we're climate scientists too! News from NASA on all things climate.37,741 followers | Follow
American Elements
Science Technology from American Elements- Nanotechnology, Robotics, AdvancedMaterials, AlternativeEnergy, Lasers, Military, GreenTechnology, LifeScience, Space31,078 followers | Follow
Space Fellowship
An international news and information network dedicated to the space industry.22,161 followers | Follow
NASA Goddard Images
@NASAGoddard is home to great pix, vids & visualizations. We Tweet the very best of them to you!20,299 followers | Follow
NewHorizons2015
The First Space Mission to Explore Planet Pluto and the Kuiper Belt19,178 followers | Follow
Space Center Fan
Dedicated fan of Kennedy Space Center, tweeting launch dates, tours, tickets & events in Florida, NASA, Space & more! Follows back15,000 followers | Follow
Universe Today
The official feed of Universe Today, a space and astronomy news website read by more than 3 million people a month. (Posts from Fraser and Nancy, mostly)14,930 followers | Follow
Emily Lakdawalla
I'm the Planetary Society blogger, once a planetary geologist, now a writer and mom, writing about great space images and mission news.14,645 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.10,480 followers | Follow
Brian Malow
Earth's Premier Science Comedian. Available for off-world appearances if transportation is provided. Makes science videos for Time Magazine.8,942 followers | Follow
Astronomy Update
8,438 followers | Follow
Exoplanetology.com
The Art and Science of New Worlds. Explores the impact of Exoplanet discoveries on Humanity's Culture and Future. http://bit.ly/Twanifesto6,410 followers | Follow
- Jeff Goldstein
-Astrophysicist, educator, writer, nat'l cntr director (http://ncesse.org), @Huffingtonpost blogger | Science education in a new light. Blog on the Universe5,917 followers | Follow
Dr. David Warmflash
Astrobiologist, science communicator, physician, health & fitness advocate, scientific pantheist, defender of science, likes ancient Phoenicia-Israel & Greece4,525 followers | Follow
EarthSciPictureofDay
Earth Science Picture of the Day features over 3000 images that highlight the processes and phenomena that shape our planet. New image everyday!4,427 followers | Follow
NASA ESPO Team
Follow the NASA ESPO team to find out what's happening on our earth science missions!3,242 followers | Follow
Ethan T. Allen
Creative Director at Raspberry Media. Photographer at ZUMA Press. Astronomer in our Heliosphere3,161 followers | Follow
Doug Ellison
Founder of Unmannedspaceflight.com , Visualization Producer at JPL. This is not an official NASA twitter account. Opinions and views expressed are my own.3,111 followers | Follow
TIS Astro Cam
Stay up to date with the latest news and inside information about the full range of DMK cameras for astrophotography from The Imaging Source.2,476 followers | Follow
Astronomy Telescopes
All about astronomy, telescopes, the universe and orion!2,008 followers | Follow
Dr. Heather Good
Heather Good EdD is editor of http://FoundonMars.com Attendee of STS-134 Tweetup!!1,690 followers | Follow
Roger Weiss
NASA/JSC ISS Research; 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.1,204 followers | Follow
adam gudinas
resources to help you on your quest to discover space (atm) Amateur Telescope Making and the whole field of amateur astronomy921 followers | Follow
