Ever since man first looked at Jove with sufficient magnification to see it, the Great Red Spot has been there. It has gotten ruddier and paler, larger and smaller, but it has never gone away. Now we have a chance to find out how and why it exists ... and persists.
I expect some spectacular pictures to come from this flyby. Stay tuned. The pictures might be even more amazing than this reprocessed image from Voyager 1. (Full-size original here.)