They concluded that there must be a ring system around the planet.
Are we just lucky enough to see Saturn at precisely the right time when its ring system is big and active?
The ring system was created when several moons crashed together.
A gas giant's ring system is a big place.
Pluto may have up to 10 moons, along with at least one ring system, according to a new study.
As of 2010 people know that the Uranian ring system have 13 rings.
The ring system may be relatively young and did not form at the same time as Uranus.
The drive flame from that thing must have roiled the whole ring system.
They'd have turned it into a ring system, or a cloud of radioactive steam.
Four of Neptune's 13 moons are inside the ring system.