This image from NASA's Cassini spacecraft shows a region in Saturn's outer B ring. The view here is of the outer edge of the B ring, at left, which is perturbed by the most powerful gravitational resonance in the rings.
It may look as though Saturn's moon Mimas is crashing through the rings in this image taken by NASA's Cassini spacecraft, but Mimas is actually 28,000 mi (45,000 km) away from the rings. There is a strong connection between the icy moon and Saturn's rings
It's difficult to get a sense of scale when viewing Saturn's rings, but the Cassini Division (seen here between the bright B ring and dimmer A ring) is almost as wide as the planet Mercury as seen by NASA's Cassini spacecraft.
From a distance Saturn seems to exude an aura of serenity and peace in this image from NASA's Cassini spacecraft. In spite of this appearance, Saturn is an active and dynamic world. Mimas is seen to the upper-right of Saturn.
Although we are used to seeing Saturn's moons lit directly by the Sun, sometimes we can catch them illuminated by 'Saturnshine.' Here, NASA's Cassini spacecraft see Mimas (upper right) lit by light reflected off of Saturn.
From afar, Saturn's rings look like a solid, homogenous disk of material. But upon closer examination from NASA's Cassini spacecraft, we see that there are varied structures in the rings at almost every scale imaginable.
NASA's Cassini orbiter shows Saturn is circled by its rings (nearly edge-on in this image), as well as by the moons Tethys (the large bright body near the lower right corner) and Mimas (seen as a slight crescent against Saturn's disk above the rings).
NASA's Cassini spacecraft spies Mimas, positioned against the shadow of Saturn's rings, bright on dark. As we near summer in Saturn's northern hemisphere, the rings cast ever larger shadows on the planet.
Among the interplay of Saturn's shadow and rings, Mimas, which appears in the lower-right corner of the image, orbits Saturn as a set of the ever-intriguing spokes appear in the B ring (to the right of center) 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.