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NASA: Closest planet to sun, Mercury, harbors ice

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CAPE CANAVERAL, Fla. (AP) — Just in time for Christmas, scientists have confirmed a vast amount of ice at the north pole — on Mercury, the closest planet to the sun. The findings are from NASA's Mercury-orbiting probe, Messenger, and the subject of three scientific papers released Thursday by the journal Science. The frozen water is located in regions of Mercury's north pole that...