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Distant Rings
Featured on October 19, 2017
Small moons orbit within the faint rings of the planet Uranus, as shown in this diagram. The rings form several narrow bands, shown in white, and a few wider bands, in blue and orange. Some of the moons acts as shepherds, keeping the ring material in place. Most of the rings particles are tiny, but some are as big as pickup trucks. [Ruslik0/Wikimedia]
