NASA
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U.S. may keep nuclear warheads handy for giant asteroid threat
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Outpouring of lunar lava cause behind striking 'Man in the Moon' effect
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U.S., India space agencies sign agreement as partners in exploration of Mars and Earth
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What is that mysterious thing on Saturn's moon Titan?
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NASA images show that lakes around the world are rapidly disappearing
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Sierra Nevada Corp. challenges NASA-Boeing/SpaceX $6.8 billion space taxi deal: Source selection process smack of 'inconsistencies'
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Mars rover Curiosity drills into Mount Sharp to collect samples and finds mysterious 'ball'
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Love golf? Mars rover Curiosity finds ball and drills hole
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Maven, Mangalyaan celebrate Mars orbit entry by sending back first photos of Red Planet
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Soyuz docks at ISS, delivers 3 astronauts
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Mars rover Curiosity takes first sample from Mount Sharp
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NASA's Maven returns its first images of Mars
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