Enceladus

Small inner moon of Saturn, and the first to be settled by humans.

Surface
Enceladus has two distinctly different surface terrains.

Structure
Unusually for a body of its size and composition, Enceladus is differentiated, with a dense, somewhat rocky core, liquid water mantle, and a solid crust of water ice.

Geysers
The plumes of water emerging from the south polar region were first discovered by the Cassini spacecraft in