Could there be life on Jupiter's moon?

Short answer, yes, there can be life on Jupiter's moon and NASA's Europa Clipper spacecraft will scour Europa for the ingredients for life even if we cen be alone in the solar system, alone in the galaxy or even alone in the univers considering life in general and intelligent life in special.

For the longer answe you will need to search the details that make NASA think that life could be there in the liquid water ocean under the ice on Europa. You can start listening The professor Brian Cox in an episode from Solar System on BBC Earth Science.

Europa, Jupiter's largest moon, contains most of the conditions needed to sustain life. And what it's missing is handily provided by a smaller moon, Io, which orbits close by. Professor Brian Cox ponders if the combination of these two moons could be our closest chance to finding life in our universe.