A theory involving a "mushy zone" of ice along the moon’s fissures could explain the enormous plumes erupting from its south ...

A new study suggests Uranus' moon Miranda may harbor a water ocean beneath its surface, a finding that would challenge many ...

Saturn’s moon Enceladus may hide life, but its geysers might not erupt from a deep ocean. Instead, salty ice pockets melt ...

In 2005, NASA's Cassini spacecraft first discovered towering plumes of water vapor erupting from the moon's frozen surface ... habitable — underground ocean. Liquid from the ocean, scientists ...