When seen in closeup as in this recent image taken by the Cassini spacecraft, Saturn’s F resolves into multiple dusty strands. This view shows three bright strands and a fainter fourth strand on the right.
The bright center strand is the actual core of the F ring. If the view were from farther out, it would show that the other strands are not independent but are sections of long spirals of material that wrap around the core as they all circle Saturn. It’s thought that the material in the spirals may have been dragged out from the F ring’s core during encounters with a small moon.
Image Credit: NASA