Mercury poles give up hints of water ice
The radar-bright patches line up perfectly with areas of permanent shadow A Nasa spacecraft has found further tantalising evidence for the existence of water ice at Mercury's poles. Though surface temperatures can soar above 400C, some craters at Mercury's poles are permanently in shadow, turning them into so-called cold traps. Previous work has revealed patches near Mercury's poles that strongly
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MESSENGER Provides New Look at Mercury's Landscape, Metallic Core, and Polar Shadows
MESSENGER Completes Primary Mission at Mercury, Settles in for Another Year