Flying past Saturn's moon Dione, Cassini captured this view which includes two smaller moons, Epimetheus and Prometheus, near the planet's rings.

The Cassini spacecraft looks at a brightly illuminated Enceladus and examines the surface of the leading hemisphere of this Saturnian moon.

The line of Saturn's rings disrupts the Cassini spacecraft's view of the moons Tethys and Titan.

Saturn's moon Mimas peeks out from behind the night side of the larger moon Dione in this Cassini image.

Saturn's small, potato-shaped moon Prometheus appears embedded within the planet's rings near the center of this Cassini spacecraft view while the larger moon Mimas orbits beyond the rings.

A quintet of Saturn's moons come together in the Cassini spacecraft's field of view for this portrait.

A quartet of Saturn's moons, from tiny to huge, surround and are embedded within the planet's rings in this Cassini composition.

NASA's Cassini spacecraft obtained one of two unprocessed images on Dec. 12, 2011.

NASA's Cassini spacecraft obtained this unprocessed image on Dec. 12, 2011.

The colorful globe of Saturn's largest moon, Titan, passes in front of the planet and its rings in this true color snapshot.

Saturn's third-largest moon Dione can be seen through the haze of its largest moon, Titan.

A crescent Enceladus appears with Saturn's rings in this Cassini spacecraft view of the moon.

Although traveling at great speed, the Cassini spacecraft managed to capture this close view of Saturn's small moon Helene.

This stunning false-color view of Saturn's moon Hyperion reveals crisp details across the strange, tumbling moon's surface.

Saturn sits nested in its rings of ice as Cassini once again plunges toward the graceful giant.

Recent Cassini images of Saturn's moon Enceladus backlit by the sun show the fountain-like sources of the fine spray of material that towers over the south polar region.

The best view of Saturn's rings in the ultraviolet indicates there is more ice toward the outer part of the rings.

The spacecraft views the rings as never before, revealing previously unknown faint rings and even glimpsing its home world.

Vertical structures, among the tallest seen in Saturn's main rings, rise abruptly from the edge of Saturn's B ring to cast long shadows on the ring .