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

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The solar system's most extreme real estate: frozen water trapped in perpetual darkness, mere metres from surface temperatures that liquify metal. The post 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 appeared first on Space Daily .