permissions: Jupiter, with moons and the Great Red Spot, photographed by Hubble Space Telescope, Autumn 1996.
The upper moon is Io and, I believe, the lower Callisto. Notice that above the Great Red Spot are the three White Oval storms (FA, BC, and DE). In 1998 BC and DE merged to become BE and in 2000 merged with FA to become Oval BA. In 2005 BA turned red.
See also: Animation from Proposal 6452.
(The date I gave in the earlier post is wrong; that was the date on the filed proposal document. There should, somewhere, be specific dates for each image, but I haven’t worked out where yet. Also I’ve changed my mind about the identity of that second moon.)
Image credit: NASA/ESA/SSI.