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   -  Pioneer 11
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Saturn Summary


Saturn Moon: Prometheus!

This image of Prometheus was acquired by the Voyager 2 spacecraft on August 25, 1981. This image shows Saturn's thin F-Ring with shepherd satellites Prometheus and Pandora. Prometheus is the inner moon and Pandora the outer.

Prometheus is the third satellite of Saturn and was discovered by S. Collins and others by analyzing photographs taken by the Voyager in 1980. Like Pandora, Prometheus is a shepherd satellite for the inner part of the F-ring. It also has numerous ridges and valleys with large craters, some up to 20 kilometers (12 miles) in diameter. Relative to its immediate neighbors, Prometheus has a much smoother surface and is much less dense - possible indicating an icy interior.

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