«Some computer models show that large vortices would live longer if they merge with smaller vortices, but this does not happen often enough to explain the Red Spot's longevity,» Marcus said. (sciencedaily.com)
Some researchers argue that the Red Spot gains energy by absorbing smaller vortices. (sciencedaily.com)
Several smaller vortices are nested within the main hexagon, and some of them rotate in the opposite direction. (space.com)