Learn how a giant storm on Saturn sent temperatures soaring in this video from NASA's Goddard Space Flight Center. About once a Saturn year, the planet develops a massive storm called a Great White Spot. Planetary scientist Brigette Hesman describes observations of the storm that erupted on Saturn in December 2010. She notes an unexpected increase in levels of ethylene gas and describes infrared data from the Cassini spacecraft that showed a spike in temperature of over 80 Kelvin -- new record for the largest atmospheric temperature change for a storm on Saturn.