Saturnian Terminator (Natural Colors; credits: Lunar Explorer Italia)

Caption NASA:"The Terminator nearly covers the South Pole of Saturn and its stormy vortex in darkness.
As the Southern Hemisphere moves toward Winter in the Planet's 29-year orbit, darkness eventually will consume the vortex. But this seasonal change also will bring the North Pole into the light.

This view looks toward the sunlit side of the Rings from about 69° below the Ring-Plane.
The image was taken with the Cassini Spacecraft wide-angle camera on Jan. 6, 2009 using a spectral filter sensitive to wavelengths of near-InfraRed Light centered at 752 nanometers. The view was acquired at a distance of approx. 761.000 Km (about 473.000 miles) from Saturn and at a Phase Angle of 96°.
Image scale is roughly 42 Km (approx. 26 miles) per pixel.