Scientists could be completely wrong about the origin of Saturn's rings.

Saturn's rings could be billions of years old, although they don't look older than a few hundred million, a new study has found.

They're made up of billions, if not trillions, of pieces of water ice that can be smaller than a grain of sand and larger than a mountain, but they're also something of a mystery, Live Science writes.

Some scientists argue that the rings formed just 100 million years ago after Saturn's gravitational pull tore apart a passing comet or icy moon.

One of the reasons why scientists believed that…