Why the Great Red Spot on Jupiter 'jiggles' in recent NASA study
The Great Red Spot is a gargantuan, high-pressure vortex called an anticyclonic storm that has been raging in Jupiter's southern hemisphere for at least 350 years. The storm's physical width has varied in roughly 150 years of observation, but it's believed to be more than 10,000 miles wide – more than enough to contain the entirety of Earth.