When viewed from a distance with the sun directly behind NASA's Cassini, the larger, brighter craters really stand out on moons like Dione. Among these larger craters, some leave bright ray patterns across the moon.
An ethereal, glowing spot appears on Saturn's B ring in this view from NASA's Cassini spacecraft. The glowing effect is an example of an 'opposition surge' making that area on the rings appear extra bright.
Dione reveals its past via contrasts in this view from NASA's Cassini spacecraft. The features visible here are a mixture of tectonics (bright, linear features and impact cratering) the round features, which are spread across the entire surface.
Dione's beautiful wispy terrain is brightly lit alongside Saturn's elegant rings in this image captured by NASA's Cassini spacecraft. The 'wisps' are relatively young fractures on the trailing hemisphere of Dione's icy surface.
Although Dione (near) and Enceladus (far) are composed of nearly the same materials, Enceladus has a considerably higher reflectivity than Dione. As a result, it appears brighter against the dark night sky as seen by NASA's Cassini spacecraft.
Why does Saturn look like it's been painted with a dark brush in this infrared image, but Dione looks untouched? NASA's Cassini spacecraft took this image in a wavelength that is absorbed by -- methane.
This view from NASA's Cassini spacecraft looks toward Saturn's icy moon Dione, with giant Saturn and its rings in the background, just prior to the mission's final close approach to the moon on August 17, 2015.
Some parts Dione's surface are covered by linear features, called chasmata, which provide dramatic contrast to the round impact craters that typically cover moons. This image was captured by NASA's Cassini spacecraft.
This set of global, color mosaics of Saturn's moon Dione taken by NASA's Cassini spacecraft during its first ten years exploring the Saturn system; obvious feature on the maps is the difference in color and brightness between the two hemispheres.