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Spokes (2)
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At the bottom left corner of the 1 st and 2nd image, the bright inner edge of the A-Ring is visible. Continuing radially inward (or toward Saturn) are several bands that lie within the Cassini Division, bounded by the bright outer edge of the B-Ring. The rounded shadow of Saturn cuts across the Rings in the image at right.
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.
In Voyager images, when Spokes were seen at low phase angles, they appeared dark; when seen at high phase angles, they appeared bright. The Spokes seen here are viewed by Cassini at a very high phase angle, which is about 145° at the center of each image.
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