Inner shepherd of Saturn’s ropy F-ring, Prometheus casts a long shadow through the ring’s icy haze in this beautifully reworked Cassini image by Gordan Ugarkovic.
Discovered by Voyager in 1980 Prometheus completes a tumbling orbit around Saturn every 14.7 hours, regularly dipping into the F-ring in a scalloped path and pulling out streamers of icy particles every time it emerges. At 92 miles long, the potato-shaped moon is only 62 miles across at its widest.
See this image and lots more on Gordan’s Flickr album.
Image: NASA/JPL/SSI/Gordan Ugarkovic.