NASA: Ganymede is a water and ice Club Sandwich that may harbor life

NASA scientists says that the largest moon in the solar system may harbor life in its inner oceans. Previously, scientists thought Ganymede only had one ocean between two ice layers, but data reveals that its structure is "ice and oceans stacked up in several layers like a club sandwich." » 5/01/14 8:16pm 5/01/14 8:16pm