Saturn's Rings May Be More Massive, Older, Than Previously Thought

Saturn’s rings may be more massive than previously thought, and potentially much older, according to calculations that simulate colliding particles in Saturn’s rings and their erosion by meteorites. These results support the possibility that Saturn’s rings formed billions of years ago, perhaps at the time when giant impacts excavated the great basins on the Moon. The findings also suggest that giant exoplanets may also commonly have rings.

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