Saturn's rings are almost as wide as the distance between the Earth and the moon, so at first glance, they seem like an easy place to land and explore on foot. Except there's one problem.

In 2005, an alien probe flew through the hazy and cold atmosphere of Titan, the largest moon of Saturn, and landed on the world's surface. That spacecraft -- named the Huygens probe -- was sent ...

A theory involving a "mushy zone" of ice along the moon’s fissures could explain the enormous plumes erupting from its south pole. Saturn's icy moon Enceladus has long been considered a ...