This image shows one of Saturn's moons, called Iapetus. Iapetus is notable for its unusual appearance. Caused by what is suspected to be an unknown dark material, probably a form of carbon, Iapetus looks as though it has been "painted" over. This led to it being closely inspected by the Cassini spacecraft, which moved as close as 2,000 kilometers to image the moon. Iapetus is certainly one of the more interesting moons found in our solar system.
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