For more than a decade, NASA’s Cassini spacecraft traced Saturn’s rings and moons, returning some of the most detailed ...

The outer planets of the solar system are swarmed by ice-wrapped moons. Some of these, such as Saturn's moon Enceladus, are known to have oceans of liquid water between the ice shell and the rocky ...

Our exploration of the outer Solar System has revealed a host of icy moons, many with surface features that suggest a complex geology. In some cases, these features—most notably the geysers of ...

Saturn's moon Mimas, just 250 miles wide, could have a liquid water ocean under its outer icy shell, according to new research led by Max Rudolph at UC Davis. If such moons are the right size, water ...

Saturn’s “Death Star”-like moon Mimas may have a boiling ocean under its icy shell. The moon pitted with craters—including a very large one, giving it its nickname—may appear to be geologically dead, ...

Saturn's moon Mimas, imaged by the Cassini spacecraft. A new study shows how such small ice moons could sustain a liquid ocean beneath an icy shell, and how that could give rise to surface features.