NASA
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Why politicians are stopping us from finding alien life
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How do stars get gobbled up by black holes?
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Perseid meteor shower peaks Tuesday night: How and when to watch this rare celestial treat
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Follow the journey of the crowdfunded ISEE-3 spacecraft
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Hubble Space Telescope: NASA scientists spotted 'zombie star' after supernova explosion
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Watch NASA's video of its first 'flying saucer' test
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Mars flying saucer a 'great test' where we are able to 'learn new things': NASA
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NASA flying saucer test success means sending heavy payloads to Mars now possible
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Sleepless astronauts rely regularly on sleeping pills. Why experts are worried
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NASA Mars-bound flying saucer blasts into near space [Video]
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Sleepless in space: NASA finds astronauts need pills to snooze
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Curiosity's second anniversary brings evidence of life on Mars
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