NASA
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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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California wildfires result to 'fire clouds.' See what they look like
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Orion's unmanned splashdown prepped for by Navy
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NASA Mars Curiosity rover celebrates second anniversary on Red Planet
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NASA tests Cannae Drive, impossible engine that might make deep space exploration possible
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All hell breaks loose on Io as volcanoes erupt
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Father builds interactive NASA spaceship for his son: Comes with a robot arm and mission control
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Siding Spring comet will fly by Mars. Are NASA rovers, satellites in danger?
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Three massive volcanic eruptions rock Jupiter moon Io
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