Cassini Enceladus
Jupiter’s icy moon Europa (above left in a reprocessed color view made by images taken by NASA’s Galileo
spacecraft in the late 1990) is thought to have a warm ocean shrouded beneath a layer of ice. Saturn’s icy moon Enceladus (shown in cross section above right)
is also believed to have a liquid ocean between its rocky core and icy crust. Credit: NASA