NASA's press conference today announced that a potential energy source for life appears to exist on Saturn's icy moon Enceladus.
The Cassini spacecraft detected hydrogen in the plumes of material spraying out from Enceladus' ocean during its last flyby, and ample hydrogen in the moon's ocean could foster the presence of microbes.
NASA also provided insights into other 'ocean worlds' in our solar system such as Jupiter's moons Europa, Ganymede, and Callisto. More at NASA and Space.com.