Conversation so far:
which one of saturn's moons has water
Measurements of Enceladus's libration as it orbits Saturn suggests that the entire icy crust is detached from the rocky core and that a global ocean is present beneath the surface.
how big is enceladus
Enceladus is about 500 kilometers in diameter.
what is enceladus named after
Enceladus is named after the giant Enceladus of Greek mythology.

Question: how many moons does the planet have
Self-contained rewrite: how many moons does saturn have