Saturn's F ring
Saturn's moon Prometheus cuts a dark channel in the F ring's inner edge that then shears out over successive orbits, giving the ring the unique appearance seen here. Image credit: NASA/JPL/Space Science Institute
Cassini scientists have discovered that the rapid changes in Saturn's F ring are due to small moons colliding with the ring. These results are reported in the June 5 issue of Nature.

Read the full news release from the Science and Technology Facilities Council at http://www.scitech.ac.uk/PMC/PRel/STFC/CassColl.aspx

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