Saturn Moons : Enceladus

The Saturn moon Enceladus is one of the brightest objects in our solar system. Covered in water ice that reflects sunlight like freshly fallen snow, Enceladus reflects almost 100 percent of the sunlight that strikes it. Because Enceladus reflects so much sunlight, the surface temperature is extremely cold, about -201° C (-330° F).

NASA/JPL/Space Science Institute and Cassini Imaging Team

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Eris