View Full Version : Cassini Sees Shepherding Moons

2005-Sep-11, 05:07 AM
SUMMARY: NASA's Cassini spacecraft is now close enough to Saturn that it's able to resolve the two F-ring-shepherding moons: Prometheus and Pandora. Prometheus is 102 km across, and Pandora is 84 km across, and they interact with Saturn's outermost ring causing clumps and other unusual formations. They have very chaotic orbits, which can change unpredictably when they get close to each other. The moons were originally discovered by Voyager 1 in 1980, and follow-up observations have been made by the Hubble Space Telescope.

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