... Jupiters Great Red Spot from Voyager 1 . ... What will become of Jupiter's Great Red Spot? Recorded as shrinking since the 1930s, the rate of the Great Red Spot's size appears to have accelerated just in the past few years. A hurricane larger than Earth, the Great Red Spot has been raging at least as long as telescopes could see it. Hubble s Jupiter and Shrinking Great Red Spot . ... Gas giant Jupiter is the solar system's largest world with about 320 times the mass of planet Earth. ...