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planetary ring

ring of dust and debris orbiting a planet or planet-scale object

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A planetary ring is a thin band of dust and debris that orbits around a planet, held in place by the planet's gravity. These rings are scientifically interesting because they help us understand how planets form and evolve, and they reveal the dynamic processes of gravitational forces in space.

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Commons category: Planetary rings
Unicode character: 🪐

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The moons Prometheus (right) and Pandora (left) orbit just inside and outside, respectively, the F ring of Saturn, but only Prometheus is thought to function as a shepherd moon.

A ring system is a disc or torus orbiting an astronomical object that is composed of numerous solid bodies such as dust particles, meteoroids, minor planets, moonlets, or stellar objects.