Mercury, the closest planet to the sun, sits in the hot seat, with temperatures soaring up to 800 degrees Fahrenheit. Certain spots at the planet's north and south poles, however, remain extremely cold—so cold, in fact, that scientists long suspected this sun-scorched planet of harboring ice. Sure enough, in 2012 NASA's MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) mission reported finding deposits of ice and frozen chemicals at Mercury's north pole. Granted, Mercury doesn't have the same kind of ice cap Earth does. But if all the deposits were added up, there would be enough ice to bury Washington, D.C., under a layer two miles thick. Watch the animation to see just how bone-chillingly dark Mercury's north pole can be, especially in deep craters, where the sun may never shine.
Please give credit for this item to: NASA's Goddard Space Flight Center Cover image courtesy of NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington Video courtesy of NASA Goddard Space Flight Center/Massachusetts Institute of Technology/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington North pole temperature image courtesy of NASA/UCLA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington Topography image courtesy of NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington Cartoon sequence courtesy of NASA/UCLA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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