Jupiter and two of its moons photographed from a distance of million kilometres by the Voyager spacecraft on February Jupiters inner most satellite Io can be seen against the planets disc at the far right of the picture is Europa another of Jupiters four Galilean satellites so called because they were discovered by Galileo Jupiters atmosphere consists of colourful swirling bands of cloud it is domin ated by the Great Red Spot visible towards bottom left which is a giant circulating atmospheric disturbance The original print before being cropped during duping also shows the satellite Callisto very faintly at the very bottom of the photo The photo