In late 2010, NASA’s space probe Cassini started observing a huge storm on Saturn lasting for several months. In recent days, an article was published on the journal “Nature Geoscience” that provides an explanation for this phenomenon that had been observed a number of times in the last 140 years but had remained mysterious. According to a team led by Cheng Li of CalTech, Pasadena, the presence of water is the key to its origin.