... Storm Alley on Saturn . ... 2.11.2004 . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: What causes storms on Saturn? To help find out, scientists commanded the robot Cassini spacecraft now orbiting Saturn to inspect a circulating band of clouds nicknamed "Storm Alley." This westwardly moving cloud ring has been unusually active since the beginning of 2004, spawning white swirling storms and dark storms ringed by sprawling white clouds all cascading around the gas giant. ...