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NASA Messenger mission captures photos of polar ice on Mercury
NASA Messenger mission captures photos of polar ice on Mercury

A spacecraft circling Mercury has captured the first photos of ice deep inside polar craters on the planet, strengthening confirmation that such pockets exist and helping to further explain how they have evolved. Scientists working on NASA's Messenger mission, which is managed from the Johns Hopkins Applied Physics Laboratory in Laurel, say the images reveal that the ice was deposited relatively recently, possibly through some recurring process. Their research was published online Wednesday in the journal Geology. "Those images show extensive regions with distinctive reflectance properties," lead author Nancy Chabot, an instrument scientist on the mission and a planetary...

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