Скачать или смотреть Why does Saturn have rings?

Hank fields one of the most commonly asked questions about our solar system: Why does Saturn have rings? Part of the answer has to do with the fact that it's not the only planet that has them. Watch to learn more!

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Sources:
http://spaceplace.nasa.gov/saturn-rin...
http://scienceline.ucsb.edu/getkey.ph...
http://www.livescience.com/32949-why-...
http://blog.hmns.org/2010/04/the-roch...