Saturn has 62 moons. One of them is Enceladus, which on first glance doesn’t look like much – kind of like a huge galactic golf ball. But this small moon, about the size of England, is a lot more interesting that you might imagine. Enceladus provides almost all of the material that makes up Saturn's E Ring.
"It turns out that this whole ring is material that came, ultimately, from the moon itself," says astronomy contributor, Jean Creighton.