COVER Optical image of Jupiter’s atmosphere, taken by the Juno spacecraft. The cloud top colors vary because of differing compositions, probably mixtures of water, ammonia, and ammonium hydrosulfide. The large elongated storm in the lower left is known as a barge; a more circular white storm is visible at the top right. Microwave and gravitational field data from Juno constrain the depths of the gas giant’s storms. See pages 964 and 968.
Credit: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill