The scientists think that Europa can have the life on it.
I have read somewhere that scientists think that europa may have an underground ocean.
Many scientists believe that Europa may hold water, or at least ice which could mean there is a possibility of life on one of Jupiter's moons.
It may have oceans of liquid water under its layers of water ice. Scientists want to know if these oceans (assuming they are there) contain any forms of life.
As far was we know the development requires water in its liquid for to be present and a source of energy to supply/drive chemical reactions. We know that deep down Europa has a liquid layer (of water) and the geysers of this water into space proves that there is energy in Europa's core.
Scientists believe that there is liquid water, under the crust of Europa.
Europa is covered with ice and underneath a layer of ice there is an ocean that scientists think might have life living in it. Also Europa has many cracks on it.
A saline ocean beneath it's crust.
Water
There may be life under Europa's vast oceans. It is cold, but heat from the moon's core and Jupiter's magnetic field may make it habitable for organisms under the ice.
Scientists accept that Europa may have life because it has liquid water on it.
Icy Caps
An icy surface.