[music throughout] Europa is one of the largest moons of Jupiter,
and we believe that Europa has a subsurface ocean
tens to hundreds of kilometers thick.
And so this ocean may be one of the best places to search for life in the Solar System.
There’s been three space missions that have provided evidence
for Europa harboring liquid water.
The first one is Voyager in the late 70s,
the second one is the Galileo Mission in the late 90s,
and most recently Hubble which detected plume-like emission from
hydrogen and oxygen which is closely related to the existence of water beneath its surface.