Astro
Asteroid Watch
JPL's Near Earth Object Office coordinates NASA's efforts to detect, track & characterize potentially hazardous asteroids & comets that could approach Earth.873,574 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 Camp746,542 followers | Follow
Soichi Noguchi 野口 聡一
Long duration space flight on ISS! http://goo.gl/qmmf7 http://bit.ly/3ZMbEb http://bit.ly/bXNO6I http://bit.ly/bGfUrB http://linkd.in/ePb57v445,495 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.410,972 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.233,615 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.214,760 followers | Follow
CassiniSaturn
Cruising around Saturn, its moons and the magnificent rings194,040 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.152,729 followers | Follow
NASA Astronauts
Hear from all NASA's astronauts on Twitter, plus updates on astronaut activities here.135,878 followers | Follow
Curiosity Rover
NASA's next mission to Mars. I'm currently en route to the Red Planet. Arrival anticipated Aug. 5, 2012.101,275 followers | Follow
Nicole Stott
NASA Astronaut STS-128, ISS Expeditions 20/21, STS-129, STS-133. Aquanaut NEEMO 9.94,164 followers | Follow
Space Fellowship
An international news and information network dedicated to the space industry.22,168 followers | Follow
Col. Tim Kopra
U.S. Army Astronaut, International Space Station Expedition 20 (STS-127). Ask me what it’s like to be Army Strong from the Space Station at goarmy.com/space.19,890 followers | Follow
NewHorizons2015
The First Space Mission to Explore Planet Pluto and the Kuiper Belt19,359 followers | Follow
Jeff Williams
19,016 followers | Follow
Universe Today
The official feed for Universe Today. You'll read our stories, and links to the best space news, photos and videos we can find.15,109 followers | Follow
Space Center Fan
Dedicated fan of Kennedy Space Center, tweeting launch dates, tours, tickets & events in Florida, NASA, Space & more! Follows back15,008 followers | Follow
ESA Planck
A European Space Agency (ESA) spacecraft to understand the origin and evolution of our Universe14,220 followers | Follow
KSC Visitor Complex
Tour behind the scenes, meet a real astronaut, get vertical on the Shuttle Launch Experience, walk beneath a moon rocket and see 3D IMAX space films.12,385 followers | Follow
ESA Operations
From low Earth to deep space: keeping up with space operations at ESA - Europe's space agency.11,968 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.10,600 followers | Follow
Daniel Fischer
All things astronomy and space (and then some) - in tiny bits and pieces but mostly with links to more ... :-)4,821 followers | Follow
Diego Urbina
Engineer, Mars 500 crew member. I tweet mostly about space, engineering, science, art.3,651 followers | Follow
Space Launch News
Real time #space news coverage of world launches & missions from Cape Canaveral. #NASA #ESA3,504 followers | Follow
Andreas Schepers
Was mit Kommunikation für europäische Raketen, Satelliten und Astronauten. Part-time student @uniofleicester. It's rocket science, baby!2,764 followers | Follow
Will Gater
Astronomer, science writer & space geek. Author of The Cosmic Keyhole, The Night Sky Month by Month & co-author of The Practical Astronomer.2,726 followers | Follow
Yuri's Night
A global celebration of the first human to go to space and his message to come together to enhance and protect our planet, not destroy it.2,601 followers | Follow
SkyShare Network
Small field astronomy: planets, double stars, variables, exoplanets, planetary nebulae ... Love'em all2,288 followers | Follow
Mars500 experiment
Марс-500 / Mars-500 / 火星-500 space project is a multi-part ground-based (in Moscow, Russia) experiment simulating manned flight t♂ Mars1,806 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!1,647 followers | Follow
Sterne und Weltraum
Sterne und Weltraum ist das Magazin von und für Profi- und Amateurastronomen aus dem Hause Spektrum der Wissenschaft. Aus der Redaktion twittert Uwe Reichert.1,632 followers | Follow
Chandrayaan1
I am India's first mission to the moon. This is the unofficial twitter feed.1,350 followers | Follow
Planetarium Hamburg
Planetarium Hamburg, das wahrscheinlich modernste Planetarien weltweit. Folgen Sie unseren Nachrichten. Regelmäßig Information zum Sternenhimmel über Nordeuropa1,325 followers | Follow
T.S. Kelso
Operator of CelesTrak, the world's first source for orbital element sets and related software and educational materials.931 followers | Follow
Himmelsereignisse
Vorwiegend deutschsprachige Infos über Astronomie und Himmelsereignisse790 followers | Follow
Space Station Pix
696 followers | Follow
Chandrayaan Updates
The first unmanned moon probe of India: un-Official twitter feeds. Mission Status : Dismissed. Waiting: Chandrayaan 2.585 followers | Follow
Raumfahrer.net
Nachrichten und Updates vom Portal Raumfahrer.net: Raumfahrt und Astronomie576 followers | Follow
astronews.com
Hier twittert der deutschsprachige Online-Dienst für Astronomie, Astrophysik und Raumfahrt. Impressum unter: http://www.astronews.com/info/impressum.html537 followers | Follow
Ernesto Guido
Italian amateur astronomer whose main interests lie in the astrometry and physical properties of comets448 followers | Follow
Stefan Taube
Buchhändler, Astronom, Astronaut ohne Raumschiff (genauer gesagt ohne Triebwerk), Sciencefiction-Fan375 followers | Follow
Albert Heller
Hobby:Astronomie / astronomy, Fotografie / photography; Member of Starkenburg-Sternwarte e.V. http://www.starkenburg-sternwarte.de; No advertising please!282 followers | Follow
Stephan Fichtner
On Astronomy_live astronomy and spaceflight enthusiasts share their passion for the night sky.203 followers | Follow
Weltraum News
198 followers | Follow
Kometeninfo
Fascinated by comets from childhood, but only managed to see the first one in 1996 (Hyakutake), 10 more naked eye/binocular since then122 followers | Follow
