How Do Saturn’s Planetary Rings Orbit Saturn and Which Of Saturn’s Rings Revolve Around the Planet the Fastest?

Saturn’s rings have circular orbits, but they revolve at various speeds.

Parts of a single ring even orbit Saturn at different rates.

For instance, the outer edge of ring E, furthest from the planet, has an orbital period of 4 hours, but the inner edge, some 180,000 miles (288,000 km closer) takes 22 hours to orbit.

The E ring has both the slowest and fastest orbits of all the rings around Saturn.

The E ring is a diffuse disk consisting mostly of ice, with silicates, carbon dioxide and ammonia, and unlike the other rings, it is composed of microscopic rather than macroscopic particles.

About Karen Hill

Karen Hill is a freelance writer, editor, and columnist. Born in New York, her work has appeared in the Examiner, Yahoo News, Buzzfeed, among others.

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