Ring system

Definition

A ring system is a collection of countless small particles that orbit around a planet due to its gravitational pull. These particles can range from tiny dust grains to large chunks of ice and rock.

5 Must Know Facts For Your Next Test

1. Saturn's rings are the most extensive and visible ring system in our solar system.
2. Ring systems are composed primarily of ice particles with some rocky debris and dust.
3. The Roche limit is the distance within which tidal forces prevent the formation of a satellite, instead leading to ring formation.
4. Jupiter, Uranus, and Neptune also have ring systems, though they are less prominent than Saturn's.
5. Enceladus, one of Saturn’s moons, contributes material to Saturn’s E-ring through its geysers.

Review Questions

• What primarily composes planetary ring systems?
• Which planet has the most extensive and visible ring system?
• How does Enceladus contribute to Saturn’s E-ring?

Related terms

Enceladus:

A moon of Saturn known for its icy surface and geysers that eject material into space.

Roche limit: The minimum distance at which a celestial body can approach a planet without being torn apart by tidal forces.

Cassini Division:

A gap between Saturn's A Ring and B Ring caused by gravitational interactions with the moon Mimas.