Space-related web 2.0 accounts that are on my radar:

(this resource has been compiled by Ariel Waldman - this wiki does not reflect the opinion of her employers/clients)

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Twitter

• 42ft Telescope
  • The 42ft telescope at Jodrell Bank Observatory. I am usually looking at pulsars.
• AAS
  • American Astronautical Society
• Adler Planetarium
  • The Adler Planetarium and Astronomy Museum invites you to join us in exploring space!
• AreWeAlone?
  • AreWeAlone? is a one hour science radio program hosted by Seth Shostak and Molly Bentley. Hear it on iTunes, your local NPR station, or at radio.seti.org
• Astrobiology
  • undefined
• AstrobiologyNAI
  • NASA Astrobiology Institute: we study life in the Universe
• 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.
• Astrospace
  • ESA NASA space astronomy astrophysics cosmology planets Shuttle Constellation Orion ISS weather meteorology oceanography hurricanes animals PETA
• BBC Sky At Night
  • The twitter feed for BBC Sky At Night magazine
• Cambridge 32m
  • The 32m telescope at Cambridge. Part of the MERLIN array of radio telescopes.
• CassiniSaturn
  • Cruising around Saturn, its moons and the magnificent rings
• Centennial Challenge
  • Finding innovative solutions to NASA's technical challenges through prize competitions open to the citizen inventor.
• Cern
  • undefined
• CollectSPACE
  • The Source for Space History & Artifacts
• ConradAward
  • High School Innovative Design Competition
• Cstar1
  • Delphi Forums & Talk City staff member
• Darnhall Telescope
  • Part of the MERLIN National Facility based @jodrellbank.
• Defford Telescope
  • Part of the MERLIN array of radio astronomical telescopes based @jodrellbank.
• DLR
  • German center for air and space travel (DLR)
• Dotastronomy
  • Conference about networked astronomy and the new media
• DownUnderMars
  • undefined
• Earth
  • What are all of these apes doing on me?
• EarthObser
  • Earth Observatory from NASA
• Educationcenter
  • I like many things. I come from humble beginning in buffalo,ny and engineer by trade at NASA.
• ESA Planck
  • An ESA spacecraft to understand the origin and evolution of our Universe
• eSTAR Project
  • The eSTAR Project is a programme to build an intelligent robotic telescope network.
• Exoplanetology
  • The Art and Science of Exoplanets and the search for life on other worlds.
• Free Space
  • Irene Klotz blogs about what's happening off Earth
• Google Lunar X Prize
  • The official Google Lunar X PRIZE Twitter
• GLXP Experience
  • undefined
• GLXP Studcomp
  • Thread for the 2008 Team Summit Student Competition
• GZ_WIYN
  • The WIYN 3.5m is the most modern large telescope on Kitt Peak.
• Heavens Above London
  • Iridium flares and ISS flybys over London
• Heavens Above SF
  • Iridium flares and ISS flybys over SF
• HMP Research Station
  • Mars and moon analog research station.
• Hubble
  • undefined
• Hubble News Feed
  • News from Hubble Space Telescope Science Institute News
• Hubble PAO
  • undefined
• Hubble Telescope
  • News from the Hubble Space Telescope
• IAF
  • Twitter updates from the International Astronautical Federation
• InsideKSC
  • An unofficial inside look at Kennedy Space Center operations.
• ISStation
  • undefined
• Jason 1 Project
  • JPL Jason-1 Ocean Surface Topography Project
• JetLab
  • The latest news from the Jet Propulsion Laboratory. This Twitter is a service of SpaceLinks.net: http://spacelinks.net/
• The Jodcast
  • An astronomy podcast from the University of Manchester's Jodrell Bank Observatory.
• Jodrell Bank
  • Home of the world's third-largest steerable radio telescope, and the MERLIN National Facility. Part of the Univ. of Manchester
• JPL PlanetQuest
  • Keep track of the latest exoplanet news!
• JPLSpace
  • Executive Director of JPL Space Foundation
• Jupiter
  • I thought it was going away, but the damn think just keep spinnin' around...
• KeplerMission
  • undefined
• Knockin Telescope
  • One of the telescopes in the MERLIN array.
• LADEE NASA
  • Lunar Atmosphere and Dust Environment Explorer - NASA Science Mission to the Moon under development; set for launch 2011!
• Last Hubble Visit
  • undefined
• LCROSS NASA
  • NASA mission to explore the Moon and see if there is water ice near one of the lunar poles!
• Live on Mars
  • undefined
• Lovell Telescope
  • The giant 76m Lovell Telescope at Jodrell Bank Observatory, UK.
• Low Flying Rocks
  • I mention every near earth object that passes within 0.2AU of Earth. @tomtaylor made me.
• LPI Library
  • The Library collection is primarily astronomy and geology.
• LRO NASA
  • I am NASA's first step back to the Moon! I am being built at NASA's Goddard Space Flight Center
• LunarNews
  • Space blogger, blogging the return to the Moon.
• Lunex
  • undefined
• Mars
  • What is this about Ice, you say?
• MarsDrive
  • undefined
• MarsPhoenix
  • I dig Mars!
• Marsrover
  • an extremelly happy rover twittering from mars..
• Marsroverdriver
  • undefined
• MarsRovers
  • Roaming the Red Planet on six wheels. The official mission Twitter of Spirit and Opportunity
• Mars Science Lab
  • The next mission to Mars.
• Martian Soil
  • All the fresh dirt on the planet Mars.
• MASAstronomy
  • Information on the Planetarium and Observatory at the Museum of Arts and Sciences in Macon, GA.
• Mercury
  • Why is it so bright around here?
• MESSENGER 2011
  • I am a NASA Discovery Mission to Mercury
• MK II Telescope
  • The 32m radio telescope at Jodrell Bank Observatory. Often to be found working as part of MERLIN.
• Meyer Observatory
  • The Paul & Jane Meyer Observatory of the Central Texas Astronomical Society
• MoonSociety
  • http://www.moonsociety.org
• MRO HiRISE
  • MRO HiRISE Images
• Mystery Team
  • Guess who?!
• NanoSailD
  • Deploy first solar sail leveraging work by MSFC approved under the SMD In-Space Propulsion Program
• NASA
  • NASA News fed from http://www.nasa.gov/rss
• NASA Ames Public Affairs 2.0 Webteam
  • We are NASA Ames' PA2.O Webteam (Karen Hanner, Alexander van Dijk, and the occasional co-tweeter). Oh, and for the record: PAO stands for Public Affairs Office.
• NASA APPEL
  • APPEL provides leadership and support for the development of the NASA program/project management and engineering community.
• NASA CoLab
  • NASA CoLab connects communities inside and outside NASA to collaborate.
• NASA Desert RATS
  • The NASA Desert RATS consists of multiple groups from NASA centers, universities, and other organizations. Goal: human-robotic systems for lunar exploration!
• NASA Earth Vital Signs
  • Latest NASA news about the Earth's climate.
• NASA EDGE
  • The show that takes an inside and outside look at all things NASA!
• NASAFolklife
  • The Official NASA Folklife Twitter Page
• NASAGLAST
  • undefined
• NASA Goddard DMV
  • I am a prototype dust mitigation vehicle!
• NASA IBEX
  • The Interstellar Boundary EXplorer, IBEX is a small explorer NASA mission to map the boundary of the Solar System.
• NASAKepler
  • I look for ET's home
• NASALaunchfest
  • A HUGE event open to the public -Sept 13, 2008
• NASA LSP
  • Launch Services Program is Earth's Bridge to Space
• NASA MAAT
  • undefined
• NASA SDO HMI
  • I am the HMI instrument on board NASA's Solar Dynamics Observatory. I am a product of Lockheed & Stanford University. Look how sleek I am!
• NaturalHazard
  • Natural Hazard from NASA
• Neptune
  • I might be denser than you other 8, but at least I'm not the heaviest!
• NewHorizons2015
  • The First Space Mission to Explore Planet Pluto and the Kuiper Belt
• NSS
  • The National Space Society is an educational, grassroots, non-profit organization dedicated to the creation of a spacefaring civilization.
• NSS Florida
  • Florida Space Coast chapter of the National Space Society
• OEWF
  • Discovering research - creating fascination. The OEWF is a national network for space professionals and space interested people.
• Open NASA
  • undefined
• Orionspace
  • Space and Astronautics News http://space.gs/blog/about/
• OverCardiff
  • Following the example of Above London, Above Cardiff tells you whats happening skyward. Currently just feeding ISS transists but more to follow as time goes by
• PAIRITEL
  • I'm the world's largest robotic telescope observing at infrared wavelengths
• Paranal
  • The Very Large Telescope (VLT) at Cerro Paranal is ESO's premier site for observations in the visible and infrared light.
• PARI
  • Pisgah Astronomical Research Institute
• PharmaSat
  • The PharmaSat experiment and flight system are designed to measure the influence of microgravity upon yeast resistance to an antifungal agent.
• Pluto
  • I don't care what you say, I'm still on the list of 9
• Pickmere Telescope
  • One of the telescopes in the MERLIN array based @jodrellbank. Sometimes known as Tabley.
• PreSat
  • Demonstrate / Validate Performance of NASA-Ames 2nd Generation Modular Triple CubeSat Nanosatellite Platform
• RamseyComm
  • Director of Communications, Space Prizes
• Regolith Excavation
  • The Regolith Excavation Challenge is Co-Hosted by the California Space Authority (CSA) and the Cal Poly SLO College of Engineering.
• Rocketboom Space
  • Rocketboom Space and Science
• Science
  • Science and space news from ScienceNewsBlog.com.
• ScienceAtNASA
  • undefined
• SEDS International Conference
  • Annual meeting of national branches of Students for the Exploration and Development of Space
• SETI@home
  • Your source for information on SETI@home, the distributed computing project to find extraterrestrial life. A service of SpaceLinks.net: http://spacelinks.net/
• Slooh
  • The only LIVE online observatory.
• SM4
  • undefined
• Sol3
  • Also called Earth, I'm reasonably temperate world, more water than land, that supports carbon-based life.
• Space
  • Space and science news from sciencenewsblog.com
• Spaceaccess
  • undefined
• SpaceCoalition
  • We're a collaboration of space industry businesses and advocacy groups organized to educate and inform you of the value and benefits of space exploration.
• Spacedemocrats
  • Space Democrats supports candidates who will enact a progressive US space policy
• SpaceDiscovery
  • undefined
• Spacedotcom
  • News coverage and conversation about space science, astronomy and exploration
• Space Elevator
  • Cheap reliable access to space.
• SpaceFellowship
  • The International Space Fellowship (ISF) is an international news and information network dedicated to the development of the aerospace industry.
• SpaceGenCongress
  • Space Gen Congress is the annual event of Space Generation Advisory Council (www.spacegeneration.org)
• SpaceMeme
  • A community of space leaders, explorers, activists, projects and more.
• Spacephotos
  • undefined
• SpaceShow
  • Dr. David Livingston, Host of The Space Show talk show
• SpaceSolarPower
  • Space solar power satellites will provide Earth with abundant, clean electric power.
• SpaceTaskForce
  • a podcast of space news, notes, and interviews
• Spaceteam
  • Live space updates at The Flame Trench, honored last year as the best beat reporting on the web.
• Space Telescope
  • undefined
• Space Viz Lab
  • The Space Visualization Laboratory at the Adler Planetarium and Astronomy Museum
• Space Weather
  • undefined
• 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/
• SpaceX Updates
  • Tweeting about SpaceX. Taking informations from all over the net and present them at one place. I have no connections to SpaceX.
• Spirit and Oppy
  • Roaming the Red Planet on six wheels. The official mission Twitter of Spirit and Opportunity
• STS-119 Discovery
  • Space Shuttle Mission STS-119 - the Final Solar Array Delivery Mission to the International Space Station.
• STS-125 Atlantis
  • STS-125, Atlantis: Final Shuttle Mission to Service Hubble.
• STS-126 Update
  • undefined
• STS-128 Atlantis
  • Space Shuttle Atlantis: Mission STS-128 to the International Space Station
• STS-129 Discovery
  • Space Shuttle Mission STS-129 to the International Space Station
• The Sun
  • Damn, it's hot in here
• TeamISU GLXP
  • undefined
• Telescopes
  • What are we looking at?
• The Moon
  • Yup, you see me every night
• The Planet Mars
  • I am the fourth planet from the Sun, Milky Way galaxy.
• The Planets
  • undefined
• The Space Review
  • Essays and commentary about the final frontier
• TESS NASA
  • looking at all the closest and brightest starts for transiting planets
• TomorrowsMars
  • Currently writing a book for a Colonization and Ressurection plan for mars...
• UNAWE
  • Universe Awarenss for Young Children
• Uranus
  • Whoever named me is getting a foot up the ass
• Venus
  • Brighter than any other planet, Baby!
• Voyager2
  • I can barely see you, let alone hear you...
• White Label Space
  • An upcoming European Google Lunar X-Prize team. For more details thestorcargo@gmail.com
• XPRIZE
  • Radical Breakthroughs for the benefit of humanity
• Year of Astronomy
  • The Universe: yours to discover
• Yuri's Night
  • A global celebration marking the anniversary of manned spaceflight.
• Yuri's Night Bay Area
  • Yuri's Night World Space Party: San Francisco Bay Area 2008