Bruce Murray Space Image Library

Prokofiev's permanent shadow

Prokofiev's permanent shadow
Prokofiev's permanent shadow Prokofiev, named in August 2012 for the Russian composer, is the largest crater in Mercury's north polar region to host radar-bright material. MESSENGER has found evidence that within the cold, dark, permanently shadowed regions of Prokofiev, water ice is exposed on the surface. NASA / JHUAPL / CIW

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