Saturn's rings are dense clumps!!!

You may think Saturn's rings are silky and smooth. But in a recent study, scientists have proven to be dense clumps or particles. This was proven at the Joint NASA convention. Saturn's B ring is constantly colliding. "The rings are different from the picture we had in our minds," said Larry Esposito of the University of Colorado at Boulder, who led the study done using ultraviolet imaging. Scientists have underestimated the mass of Saturn's rings. By studying the brightness of stars as the rings pass in front of them, we are able to map the ring structure in 3-D and learn more about the shape, spacing and orientation of clusters and particles. More information will be posted by NASA later.

http://www.cnn.com/2007/TECH/space/05/24/saturn.rings.reut/index.html