Astronomy Cast Ep. 195: Planetary Rings

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Saturn is best known for its rings. This huge and beautiful ring system is easy to spot in even the smallest backyard telescope, so you can imagine they were a surprise when Galileo first noticed them. But astronomers have gone on to find rings around the other gas giant worlds in the Solar System – the differences are surprising.

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Astronomy With the Unaided Eye shownotes and transcript.