Mimas is one of Saturn's moons, notable for its distinctive appearance and features. Discovered in 1789 by the astronomer William Herschel, Mimas is often referred to as the "Death Star moon" due to a large impact crater called Herschel that dominates its surface. This crater is about 130 kilometers (81 miles) wide, making it nearly one-third the diameter of Mimas itself, which is about 396 kilometers (246 miles) across.
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