The Great Red Spot is a storm system on Jupiter that has been active for at least 184 years, probably even much longer. It can be observed from Earth even with smaller amateur telescopes. The size of this storm system is enormous, it could contain about two Earth-sized planets. Maximum wind speeds are 430 km/h around the edge of the spot, comparable to the wind speeds inside the most extreme tornados here on Earth.
Don't miss our beautiful close up view of the Great Red Spot.