Despite being so far away from the #Sun, #Jupiter’s moons are hot—hotter than they should be! The beautiful, icy moons are known to contain interiors warm enough to host oceans of liquid water.
Previously, researchers believed that #Jupiter was the sole reason behind most of the heating associated with Io's internal ocean of magma as well as the liquid interiors of its three icy Galilean moons: #Europa, #Ganymede, and #Callisto.
