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NASA
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Space station inspired robot to help heal sick children. Learn more: go.nasa.gov/1kWhWt3 #ISS   pic.twitter.com/1B14kVassR
Should we go to Mars? It's simple. @AstroIronMike asks kindergartners: youtu.be/1VyPkzP9S-s   #JourneyToMars pic.twitter.com/sqkF0yU7G8
Live now: Learn about the Ancient Earth & Habitable Planets on NASA TV: 1.usa.gov/LofcMb Q? Ask using #askNASA pic.twitter.com/aIxmkT0Z3L
Here's a photo of a previous test similar to what is happening in our cleanroom. This same mirror segment (with the cover on to protect it) is undergoing practice tests for installing it on the test backplane. Keep an eye on our WebbCam: www.jwst.nasa.gov/webcam.html Credit: NASA/Chris Gunn
Why do we study the ultraviolet sun? Find out: go.nasa.gov/1oemLsN @NASASunEarth   pic.twitter.com/zFLCme20cz
A large amount of a banned ozone-depleting compound is still in the air. go.nasa.gov/1kVAWI0   #EarthRightNow pic.twitter.com/euAIIyrrxf
Not quite photon torpedoes, but a #SpaceVine of two @ISS_Research #cubesats deployed from @JAXA_en launcher vine.co/v/MLzWLguZ9Om
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Watch live our event on Ancient Earth & Habitable Planets at 5:30pm ET today: nasa.gov/nasatv Q? #askNASA  pic.twitter.com/tD74T4Gaac
Our GPIM spacecraft, set to launch in 2016, will validate use of 'green' propellant: go.nasa.gov/1odBZOv   pic.twitter.com/6uRCXSyG2a
Yakutat Glacier in Alaska is one of the world's fastest retreating glaciers: go.nasa.gov/1kV0wwM  #EarthRightNow pic.twitter.com/WEMMNyho99
Apply for a #NASASocial credential in Denver to cover @MAVEN2Mars' arrival Sept 21: go.nasa.gov/1kTrdSA  #MAVEN pic.twitter.com/7pPxz4a5aP
#ISS Update: New flock of mini satellites launched from station, crew packs spacewalk gear: go.nasa.gov/1obu3NS  pic.twitter.com/4bLVv4tVPk
Never in my wildest dreams did I imagine this. 10 minutes ago on the #ISS #aurora pic.twitter.com/PG25uTwm19
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Apply for a #NASASocial credential to cover the @SpaceX launch in-person Sept 19 in FL: go.nasa.gov/1kSWLYR   pic.twitter.com/prl9MHkeFS
Astronomers decode the rhythm of an unusual black hole that's 12 million light-years away: go.nasa.gov/1kSUX1X   pic.twitter.com/dk57fOeR3X
We're measuring new planetary discoveries with astonishing precision: [video] youtu.be/lA6MJkHJXVk   @NASAKepler pic.twitter.com/XlS6ZBnkAH
Administrator Bolden looks at @NASAAero innovations that affect air travelers & commerce: go.nasa.gov/1pFU7FJ pic.twitter.com/yRdD0MDqzt