NASA
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Martian rover Opportunity gets spring cleaning, snaps a 'selfie' of its shadow
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Four lunar eclipses are coming this year, starting in April - Here's how to see the Moon disappear!
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Soyuz spacecraft with US-Russian team successfully links with International Space Station
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NASA Z-2 prototype spacesuit: Here's how you can help design it
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Engine problem forces delay of Expedition 39/40 at International Space Station: NASA
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Economic inequality tied to "Collapse of Society": NASA study suggests immediate policy changes
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NASA Mars orbiter sends back images of new gully: A step closer to inhabiting the Red Planet?
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Asteroid Redirect Mission: NASA is looking for heroes and will pay you to become one
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Waves on Titan produce high tide of excitement
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NASA-funded doomsday study warns of 'irreversible collapse'
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Americans don't care about climate change but NASA's worried
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What's eating up Mercury? Tiny planet gets tinier by nine miles
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