0
NASA's Saturn-orbiting Cassini spacecraft this month made its closest pass yet of the odd, eyeball-shaped moon Mimas, which bears the scar of a massive, violent impact from its past.
The 88-mile wide Herschel crater is about one-third the diameter of Mimas, an inner moon of Saturn measuring about 246 miles in diameter. Herschel's walls extend about three miles above the moon's surface and parts of its floor are six miles deep.
Source
