NASA
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Collisions helped early galaxies spread out and grow
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Challenger Tragedy 28th anniversary: Never Forget
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Human body not fit for space travel
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James Webb Space Telescope passes last major element-level critical design review, eyes 2018 launch
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Forget doughnut rock: Mars rover Opportunity celebrates 10 years on Red Planet by finding life-friendly trace of water
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Is the water vapor-spouting dwarf planet Ceres hiding alien lifeforms?
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Rare photos of Challenger tragedy found in attic after 26 years
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Ants invade International Space Station...and they're on a mission
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Rosetta wakes up after 31 months, gets ready to chase comet (Video)
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Mysterious rock appearance next to slumbering Mars rover Opportunity leaves scientists scurrying for answers
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Man setting foot on Mars in 2030s nearing reality
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Forget Hubble, 100x more powerful James Webb telescope is getting ready
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