This image of Saturn shows the planet with its rings slightly tilted.  The moon called Dione, on the lower right, is casting a long, thin shadow across the whole ring system due to the setting Sun on the ring plane.  The moon on the upper left of Saturn is Tethys.

 Camera:  WFPC2 
Technical Information:  Color image assembled from separate exposures taken November 17, 1995 
Credit:  E. Karkoschka (University of Arizona Lunar & Planetary Lab) and NASA