NASA’s Hubble Watches Jupiter’s Great Red Spot

This time-lapse movie is assembled from Hubble Space Telescope observations spanning approximately 90 days (between December 2023 and March 2024) when the giant planet Jupiter ranged from 391 million to 512 million miles from Earth. Astronomers measured the Great Red Spot's size, shape, brightness, color, and vorticity over a full oscillation cycle. The data reveal that the Great Red Spot is not as stable as it might look. It was observed going through an oscillation in its elliptical shape, jiggling like a bowl of gelatin. The cause of the 90-day oscillation is unknown.NASA, ESA, Amy Simon (NASA-GSFC); Video: Joseph DePasquale (STScI)

Source:
https://science.nasa.gov/missions/hubble/nasas-hubble-watches-jupiters-great-red-spot-behave-like-a-stress-ball/