This Voyager 2 image of the outer B Ring of
Saturn shows so many ringlets and minigaps that it looks like a
close-up of an old-fashioned phonograph record. The narrowest
features are only 10 km across, at the limit of resolution. Even
fi ner structure was noted during stellar occultations by the rings,
as observed by the Voyager photometer and imaged later by
Cassini. The cause of most if this structure is unknown.