The night sides of Saturn and Tethys
This image from NASA’s Cassini spacecraft shows that in space, with no air to scatter the light, shadows can appear almost totally black. The view looks toward the sunlit side of the rings from about 10 degrees above the ring plane.
The image was obtained at a distance of approximately 1.5 million miles (2.4 million kilometers) from Saturn.
Saturn is just barely seen in the lower left quadrant of the image below the ring plane.