SPACE.com – Icy plumes of water vapor erupting from Saturn’s moon Enceladus have left scientists divided over whether a liquid ocean lies hidden beneath the icy surface. Now evidence from a 2008 plume fly-through by NASA’s Cassini spacecraft has turned up short-lived water ions that suggest liquid water does indeed exist inside the moon.

More:
Saturn’s Moon Does Harbor an Ocean, New Evidence Suggests
(SPACE.com)