Vortex at Saturn's south pole, infrared image. Saturn's hurricane-like storm has a well-developed vortex and eye, a feature not previously seen on any planet except Earth. It spins at 550 kilometres (350 miles) an hour, spans 8000 kilometres (5000 miles) in width and rises up to five times taller than Earth's cyclones due to Saturn's less dense atmosphere. The storm also remains locked to the south pole and does not roam across the planet surface, showing that it does not form over oceans and other water bodies, unlike Earth's hurricanes. Image taken by NASA's spacecraft Cassini on 11th October 2006.