Space
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Yes! Medium-sized black holes do exist
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Houston residents spot UFO, flying saucer giving a light show?
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NASA creating origami-style solar array: Could beam electricity to Earth
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ISS astronauts venture outside for spacewalk
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Asteroid 1950 DA might wipe out humans in 2880: Can we do anything to stop it?
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Venus, Jupiter set for pre-dawn kiss: When and how to watch this celestial wonder
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Why seven dust particles brought home by Stardust probe are important to humans
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IXION plane concept boasts panoramic views: A windowless glimpse of the future?
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Stargazers, mark your calendar: Venus and Jupiter to smooch on Aug 18
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Milky Way map may help solve century-long stardust mystery
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Up, close and personal: Rosetta probe finds comet 67P/Chuyurmov-Gerasimenko hotter than expected
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Cygnus spacecraft packing 3500 lbs of trash onboard, will burn up Sunday during Earth re-entry
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