This mosaic of Jupiter Great Red Spot taken by NASA Voyager 1, shows the area around the northern boundary where a white cloud is seen which extends to east of the region.
http://photojournal.jpl.nasa.gov/catalog/PIA00065
Details
Title: Jupiter Great Red Spot Region
Creator: NASA/JPL
Date Created: 1996-09-26
Rights: JPL
Get the app
Explore museums and play with Art Transfer, Pocket Galleries, Art Selfie, and more