But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

The NASA Juno mission has given deeper insights into the possible alien life on Jupiter's moon, Europa, and how it could lie beneath its icy shell.

The Science: Europa has been considered as a top contender for alien life for even longer than Enceladus, thanks to its massive under-ice liquid water oceans. It also displays water vapor plumes ...