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The F Ring and One of Its Shepherds
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The F Ring and One of Its Shepherds
Two tiny satellites, Prometheus and Pandora, each measuring about 50 km across, orbit Saturn on either side of the F ring. Sometimes the
ringlets are braided, sometimes parallel to each other. In any case, the passage of the shepherd moons causes ripples in the rings, which lead
to the formation of large snowballs in them. The gravitational effects of these two shepherd satellites confine the particles in the F ring to a
band about 100 km wide
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