Saturn's moon, Enceladus, could harbour alien life, scientists have discovered. New findings from NASA's Cassini mission have revealed heat leaking out from the moon's North Pole. This suggests that ...

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — which could make it hard for nutrients to get down to its buried ocean.

For decades, the moon was seen as a barren, bone-dry world with no atmosphere, no liquid water, no magnetic shield, and extreme swings in temperature. The idea that it could ever support life seemed ...