The F-Ring and crescent Rhea

The searing arc of light seen here is Saturn's icy F-Ring, seen nearly edge-on. In the background, Rhea is lit by reflected light from Saturn and the Rings, with only the slightest sliver of light at its bottom being from direct Sunlight.
The faint material surrounding the F-Ring likely lies in the Planet's equatorial plane, extending radially farther out and in from the main F-Ring core.
A smaller fraction of this material could be vertically extended, and Cassini's investigations should help to clarify this.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Oct. 30, 2005, at a distance of approximately 689.000 Km (about 428.000 miles) from Saturn. The image scale is approximately 4 Km (2 miles) per pixel.