These three images, taken over a span of 27 minutes, show a few faint, narrow spokes in the outer B ring. The spokes are about 2,200 miles (3,500 kilometers) long and about 60 miles (100 km) wide. The motion of the spokes here is from left to right. They are seen just prior to disappearing into the planet's shadow on the rings.
Cassini's first sighting of spokes occurs on the unilluminated side of the rings, in the same region in which they were seen during the Voyager flybys. Although the most familiar Voyager images of spokes showed them on the sunlit side of the rings, spokes also were seen on the unilluminated side.
NASA / JPL / Space Science Institute