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Enceladus [en-SELL-ah-dus], the sixth largest moon of the gas giant Saturn, 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.

The icy surface of Enceladus

Because Enceladus reflects so much sunlight, the surface temperature is extremely cold, about -201° C (-330° F).

More information can be found on Enceladus here.