NASA / JPL / SPACE SCIENCE INSTITUTE / SCIENCE PHOTO LIBRARY NASA / JPL / SPACE SCIENCE INSTITUTE / SCIENCE PHOTO LIBRARY
Cassini spacecraft image of vertical structures along the edge of Saturn's B ring. The structures reach as high as 2.5 kilometres and are thought to be caused by large bodies, or moonlets, passing by the ring's edge. The rings, which consist of particles of nearly pure water ice, have become contaminated with meteoritic dust over time. At top is part of the Cassini Division, which separates the B and A rings.Image obtained by the spacecraft's narrow-angle camera on the 26th July 2009, at a distance of approximately 336,000 kilometres from Saturn.
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