Suggested Searches

1 min read

Close to the Shepherd Moons

Black and white image of large, thin ring of Saturn with two small white moons circling
This spectacular image shows Saturn's moons Prometheus (at right) and Pandora (at left), with their flock of icy ring particles (the F Ring) between them. Pandora is exterior to the ring, and closer to the Cassini spacecraft here. Each of the shepherd satellites has an unusual shape, with a few craters clearly visible.

This spectacular image shows Saturn’s moons Prometheus (at right) and Pandora (at left), with their flock of icy ring particles (the F Ring) between them. Pandora is exterior to the ring, and closer to the Cassini spacecraft here. Each of the shepherd satellites has an unusual shape, with a few craters clearly visible.
The effect of Prometheus (102 kilometers, or 63 miles across) on the F ring is visible as it pulls material out of the ring when it is farthest from Saturn in its orbit. Pandora is 84 kilometers (52 miles) across.Image credit: NASA/JPL/Space Science Institute