Color contrast of the mosaic view of Saturn presented here is greatly exaggerated. In such views, imaging scientists have noticed color variations across the diffuse rings that imply active processes which sort the particles in the ring according to their sizes. Looking at the E ring in this color-exaggerated view, the distribution of color across and along the ring appears to be different between the right side and the left. Scientists are not sure yet how to explain these differences.

NASA/JPL/Space Science Institute