Saturn’s ‘Death Star’ moon may not conceal ocean after all

Saturn's moon Mimas

Craters blemish Saturn’s moon Mimas, including a large one that makes the moon look like the Death Star in Star Wars. A lack of cracks on the moon’s surface, though, casts doubt on the presence of a subsurface ocean, new research suggests.

JPL-Caltech/NASA, Space Science Institute

An ocean of liquid water probably doesn’t lurk beneath the icy surface of Mimas, Saturn’s smallest major moon, new calculations suggest.