The C-Ring (Natural Colors; credits: NASA/JPL/Space Science Institute)

Caption NASA:"The Cassini Spacecraft peers through Saturn's delicate, translucent inner C-Ring to see the diffuse blue limb of Saturn's Atmosphere.

This view looks toward the unilluminated side of the rings from about 20° above the Ring-Plane. Images taken using red, green and blue spectral filters were combined to create this Natural Color view. The images were obtained with the Cassini Spacecraft narrow-angle camera on April 25, 2008 at a distance of approx. 1,5 MKM (about 930.000 miles) from Saturn.
Image scale is roughly 8 Km (approx. 5 miles) per pixel".