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How did Saturn Get Its Rings?

18 Dec 2019, 14:17 UTC
How did Saturn Get Its Rings? NASA/JPL-Caltech/Jan Regan

Astronomers know a lot about Saturn’s ring system. They’ve known about it for centuries, ever since Galileo first spotted it with his telescope in 1610. It’s made out of ice and rock particles, some as big as a minivan. And the rings are super flat, like a razor-thin CD that’s 170,000 miles across, but only a couple dozen yards thick.

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