We've Found A Hidden Ocean On Enceladus That May Harbor Life "But now, after an analysis of gravity measurements made by Cassini from 2010 to 2012, astronomers have confirmed that a large reservoir of liquid water exists underneath Enceladus's icy surface. And just as importantly, they've confirmed that the tiny moon is a differentiated celestial body; it's comprised of two layers — an external icy layer and an internal rocky core made up of silicates. Excitingly, this layer of silicate rock, in conjunction with liquid water, means that Enceladus features a potentially habitable environment — one that could be even more hospitable to life than Europa."
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