The Great Red Spot
This close-up image of the planet Jupiter was taken by NASA's Voyager 2 spacecraft. It clearly shows the famous great red spot, which is a gigantic cyclonic storm system that has been raginf for over 300 years. A smaller white spot above is also thougth to be a storm. The amazing colors in Jupiter's clouds are formed when as yet unknown material is churned up by the violent winds that exceed 300 miles per hour (482 km per hour).
NASA / JPL Image