The
extensive ribbonlike cloud structure in Saturn's atmosphere is visible
in this Voyager 2 green-filter photograph, obtained 23 August from
a range of 2.5 million kilometers.
Some Voyager scientists have interpreted the ribbon to be a large-scale
atmospheric wave; it is believed to lie in a rapid eastward-moving
jetstream. The presence of vortices adjacent to the ribbon itself
will help scientists understand the relationship between such structures
and the strong jet-streams present in Saturn's atmosphere. The smallest
features visible in this photograph measure about 50 km across.
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