Titania

titania3_voyg2Titania’s tortured terrain is a mix of valleys and craters. Voyager 2 passed this moon of Uranus in 1986 and took this photograph. The long valleys indicate that Titania underwent some unknown tumultuous resurfacing event in its distant past. Titania is essentially a large dirty iceball composed of a roughly 50/50 mix of water ice and rock. It was discovered by William Hershel in 1787.

Image Credit: NASA

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