Europa (Jupiter II)

Europa, or Jupiter II, is unusual because it has very few craters. This means that the surface is quite new, so old craters have been covered up.

The surface is, in fact, covered with a thick layer of ice.

The ice has lots of cracks in it, which show up as dark lines

Below the ice, there is probably liquid water. Life on Earth needed water to form, so this may mean that simple forms of life exist on Europa!

Facts and Figures
Orbit	670,900 km from Jupiter
Radius	1,569 km
Mass	4.8 x 1022 kg or 0.008 Earths
Length of Day	3.55 Earth days
Length of Orbit	3.55 Earth days