This image is based on visible light and ultraviolet light.
The A ring (the outermost broad band shown in brown mostly), the Cassini division (the 2nd region inward in dark blue mostly), the B ring (the 3rd broad region going inward in green and red), and the C ring (the 4th broad region going inward in blue mostly) can be identified.
There are finer features that can be identified too.
The Cassini division is NOT a pure gap: there are particles of scale size perhaps 10 microns in the division. They are probably rocky dust (HI-209, SRJ-227).
Chemical and physical variations in the rings---which we won't discuss here---are brought out by image enhancement techniques and are distinguished by the false colors in the image.
As one can see Saturn's rings are NOT simple when looked at closely---but this shouldn't have been a surprise.
Credit/Permission: NASA,
1981 /
Public domain.
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