Deep inside polar craters on Mercury, sunlight has never once fallen — and NASA's MESSENGER spacecraft confirmed in 2012 that those permanently shadowed floors hold ancient water ice, sitting metres from terrain hot enough to melt lead - Space Daily
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Deep inside polar craters on Mercury, sunlight has never once fallen — and NASA's MESSENGER spacecraft confirmed in 2012 that those permanently shadowed floors hold ancient water ice, sitting metres from terrain hot enough to melt lead Space Daily
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