In Saturn’s atmosphere, neighbouring bands of clouds move at different speeds and directions depending on their latitudes. This generates turbulence where bands meet and leads to the wavy structure along the interfaces. Saturn’s upper atmosphere generates the faint blue haze. This false-colour view was taken by the international #Cassini spacecraft on 18 May from about 1.2 million km. See http://ciclops.org/view/8566/Cloudy-Waves-False-Color