Jupiter’s moon Europa has long looked like a frozen cue ball, its bright shell of ice hiding a global ocean that many astrobiologists see as one of the most promising places for life beyond Earth. New ...

Nasa's old Galileo data reveals ammonia-bearing compounds on Europa's icy surface near fractured zones.

Using data gathered by NASA's Juno Jupiter orbiter, scientists estimate that Europa's ice shell is about 18 miles thick — ...