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Many of the innermost moons of Saturn orbit close to the rings, especially the F and E rings, and serve to regularize their structure, a phenomenon called "shepherding."<ref name=Hamilton/>
As of October 8, 2009, scientists have discovered another massive ring system that could not previously be seen.[http://www.timesonline.co.uk/tol/news/science/space/article6864286.ece]
== Problems for uniformitarian theories ==
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