Shadow on the Rings (Natural Colors; credits: Lunar Explorer Italia)

Caption NASA:"Saturn's moon Tethys casts a wide shadow over the Planet's "F" and "A"-Rings.
Tethys itself is not visible in this image. As Saturn approaches its August 2009 Equinox, the planet's moons cast shadows onto the Rings. To learn more about this special time and to see a movie of a moon's shadow moving across the Rings, see also PIA11651.

This view looks toward the sunlit side of the rings from about 36° below the Ring-Plane.
The image was taken in Visible Light with the Cassini Spacecraft wide-angle camera on April 21, 2009. The view was obtained at a distance of approx. 1,1 MKM (such as about 684.000 miles) from Saturn and at a Sun-Saturn-Spacecraft, or Phase, Angle of 142°.
Image scale is roughly 63 Km (about 39 miles) per pixel".