Some in the Darkness, some in the Light...

Caption NASA:"Pan prepares to be engulfed by the darkness of Saturn's shadow, visible here as it stretches across the Rings.
When the Cassini spacecraft took a follow-up image of this same location about 50 seconds later, Pan (26 kilometers, or 16 miles across) had vanished into darkness.
This view looks toward the unilluminated side of the Rings from about 44° above the Ring-Plane.

The image was taken in visible light with the Cassini spacecraft narrow-angle camera on March 14, 2007 at a distance of approx. 1,9 MKM (about 1,2 MMs) from Pan. Image scale is roughly 11 Km (about 7 miles) per pixel".