While the moon Epimetheus passes by, beyond the edge of Saturn's main rings, the tiny moon Daphnis carries on its orbit within the Keeler gap of the A ring in this image from NASA's Cassini spacecraft.
On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings, and, in the background, our home planet, Earth.
A single jet feature appears to leap from the F ring of Saturn in this image from NASA's Cassini spacecraft. A closer inspection suggests that in reality there are a few smaller jets that make up this feature.
NASA's Cassini spacecraft captured this image of Tethys, telling the story of a violent history marked by impacts. Seen here are the craters Melanthius (near the center), Dolius (above Melanthius), and Penelope (upper left almost over the limb).
NASA's Cassini spacecraft uses special infrared glasses to peer through Titan's haze and monitor its surface inequatorial region dubbed 'Senkyo.' The dark features are believed to be vast dunes of hydrocarbon particles.
Although their gravitational effects on nearby ring material look quite different, Prometheus and Pan are both shepherd moons, holding back nearby ring edges in this image captured by NASA's Cassini spacecraft.
The shadow of Saturn cuts across the rings as seen by NASA's Cassini spacecraft. As the ring particles enter Saturn's shadow, their temperature drops to even colder temperatures, only to warm back up again when they re-emerge into the sunlight.
Saturn's A ring is decorated with several kinds of waves. NASA's Cassini spacecraft has captured a host of density waves, a bending wave, and the edge waves on the edge of the Keeler gap caused by the small moon Daphnis.
This image, taken by NASA's Cassini spacecraft, shows A beautiful 'mini-jet' appearing in the dynamic F ring of Saturn. Saturn's A ring (including the Keeler gap and just a hint of the Encke gap at the upper-right) also appears.
This image, taken by NASA's Cassini spacecraft, shows Dione's twin craters Romulus and Remus (just above-right of center), like their semi-divine namesakes, standing together. Also seen is Dido, the larger crater featuring a central peak.
Titan's polar collar, previously seen by Voyager 2 and the Hubble Space Telescope, has now been observed by the Cassini spacecraft, seen here in ultraviolet light. The collar is believed to be seasonal in nature.
Cassini scientists continue their quest to understand the origin and evolution of the newly discovered features observed in Saturn's A ring which have become known as 'propellers' as shown in this image from NASA's Cassini spacecraft.
This image from NASA's Cassini spacecraft reminds us of how different Mimas and Pandora are when they appear together; although both are moons of Saturn, Pandora's small size means that it lacks sufficient gravity to pull itself into a round shape.
The shepherd moon Pan orbits Saturn in the Encke gap while the A ring surrounding the gap displays wave features created by interactions between the ring particles and Saturnian moons in this image from NASA's Cassini spacecraft.
The Cassini spacecraft catches a glimpse of Janus, an irregularly shaped moon. Lacking sufficient gravity to pull itself into a round shape, Janus has had its lumpy primordial shape only slightly modified by impacts since its formation.
NASA's Cassini spacecraft has been monitoring propeller features such as Bleriot since their discovery. The bright dash-like features are regions where a small moonlet has caused ring particles to cluster together more densely than normal.
Although hidden from human eyes, NASA's Cassini spacecraft can spot these dark features on the surface of Titan dubbed 'Fensal' and 'Aztlan.' The dark features are believed to be vast dunes of particles that precipitated out of Titan's atmosphere.