Saturn’s battered moon Mimas may have a thin global ocean buried miles beneath its icy surface, raising the prospect of another "life-friendly" habitat in the solar system, scientists said on Thursday.
An underground ocean is one of two explanations for why the 400-mile (250-km) diameter moon wobbles as it orbits around Saturn, scientists using data from NASA’s Cassini spacecraft said. The other possibility is that Mimas has an oblong or rugby ball-shaped core. Follow-up measurements should provide more answers, the scientists said.