Cassini imaging scientists have found fan-like structures that suggest the presence of clumps of ring material -- possibly proto-moonlets -- in Saturn's ever-changing F ring. (News release can be found here.)

		Jul 20, 2010:	'Fan' in the F Ring - This mosaic of images from NASA's Cassini spacecraft depicts fan-like structures in Saturn's tenuous F ring.
		Jul 20, 2010:	Multiple F-Ring 'Fans' - This mosaic of images from NASA's Cassini spacecraft shows three fan-like structures in Saturn's tenuous F ring.
		Jul 20, 2010:	F Ring's Bright Core Clumps - Bright clumps of ring material and a fan-like structure appear near the core of Saturn's tenuous F ring in this mosaic of images from NASA's Cassini spacecraft.
		Jul 20, 2010:	The Effect of Prometheus on the F Ring - This movie features a simulation showing the changes to a portion of Saturn's F ring as the shepherding moon Prometheus swings by it.
		Jul 20, 2010:	Catching a Cluster of Stars - While NASA's Cassini spacecraft was pointed to study Saturn's F ring, it happened to catch a globular star cluster passing through the camera's field of view.