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.
Although Epimetheus appears to be lurking above the rings here, it's actually just an illusion resulting from the viewing angle of NASA's Cassini spacecraft. In reality, Epimetheus and the rings both orbit in Saturn's equatorial plane.
The south polar region of Saturn's active, icy moon Enceladus awaits NASA's Cassini spacecraft in this view, acquired on approach to the mission's deepest-ever dive through the moon's plume of icy spray.
NASA's Cassini spacecraft captured this view as it neared icy Enceladus for its closest-ever dive past the moon's active south polar region. The view shows heavily cratered northern latitudes at top, transitioning to fractured, wrinkled terrain.
NASA's Cassini spacecraft spied this tight trio of craters as it approached Saturn's icy moon Enceladus for a close flyby on Oct. 14, 2015. The craters, located at high northern latitudes, are sliced through by thin fractures.
Prometheus and Pandora are almost hidden in Saturn's rings in this image captured by NASA' Cassini spacecraft. Prometheus is the left most moon in the ring plane, roughly in the center of the image. Pandora is towards the right.
Enceladus looks as though it is half lit by sunlight in this view from NASA's Cassini spacecraft. Images like this one are designed to capture the extended plume of icy material spraying from the moon's south polar region.
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 enhanced-color mosaic of Saturn's icy moon Tethys shows a range of features on the moon's trailing hemisphere. This image from NASA's Cassini spacecraft was constructed from 52 images from its narrow-angle camera on April 11, 2015.
As one NASA spacecraft sailed past the distant ice world of Pluto, collecting never-before-seen vistas and invaluable science data, NASA' Cassini spacecraft turned its gaze in that direction from its outpost at Saturn.