Prometheus Creating Saturn Ring Streamers

What's causing those strange dark streaks in the rings of Saturn? Prometheus.
Specifically, an orbital dance involving Saturn's moon Prometheus keeps
creating unusual light and dark streamers in the F-Ring of Saturn. Now
Prometheus orbits Saturn just inside the thin F-ring, but ventures into its
inner edge about every 15 hours. Prometheus' gravity then pulls the closest
ring particles toward the 100-km moon. The result is not only a stream of
bright ring particles but also a dark ribbon where ring particles used to be.
Since Prometheus orbits faster than the ring particles, the icy moon pulls out
a new streamer every pass. Sometimes, several streamers or kinks are visible
at once. The above photograph taken in mid-January by the robotic Cassini
Spacecraft orbiting Saturn. The oblong moon Prometheus is visible on the far
left of the image.

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