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Does Neptune have rings, and if so, what causes them?

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Neptune has five rings in total, Galle, Le Verrier, Lassell, Arago and Adams respectively. The reason why Neptune has rings is because 1, it is a gas giant - most gas giants have rings, and 2, gravity. read more

The rings of Neptune consist primarily of five principal rings and were first discovered (as "arcs") in 1984 in Chile by Patrice Bouchet, Reinhold Häfner and Jean Manfroid at La Silla Observatory (ESO) during an observing program proposed by André Brahic and Bruno Sicardy from Paris Observatory, and at Cerro Tololo Interamerican Observatory by F. Vilas and L.-R. Elicer for a program led by William Hubbard. read more

It is also unique in being the only large moon in the solar system to circle its planet in a direction opposite to its planet's rotation — this "retrograde orbit" suggests that Triton may once have been a dwarf planet that Neptune captured rather than forming in place, according to NASA. read more

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