Underground oceans are intriguing, but not unusual. They exist on Europa, Ganymede and Callisto, three of Jupiter's largest moons, and Enceladus, Titan and Mimas at Saturn. Underground oceans ...

Ice moons such as Jupiter’s Europa and Saturn’s Enceladus are currently at the forefront of the search for extraterrestrial life, as it is believed that beneath their thick icy shells there ...