Earth
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Space rocks pummeled early Earth, computer simulation depicts 'violent past'
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Why our moon is shaped like a lemon
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NASA Opportunity Mars rover sets off-Earth driving record
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Solar super storm missed Earth in 2012: Another may strike in 10 years, causing damaging effects
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U.S. Air Force sending satellites into space for 'neighborhood watch'
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What caused the global warming 'pause'? Natural fluctuations, says scientist
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Did you miss the supermoon over the weekend? Two more chances this year
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Satellite data may act as early flood warning system
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Ancient bird had 24-ft. wingspan. Yes, that's as long as small planes
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Tatooine-like frozen planet found in binary star system 3.000 light years away
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Plastic as much as 40,000 tons in our oceans: Study
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NASA to launch Orbiting Carbon Observatory, eye on the sky for climate change
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