Saturn. Coloured Hubble Space Telescope image of the planet Saturn and its rings. This image was taken by the Near Infrared Camera and Multi- Object Spectrometer (NICMOS), and shows reflected infrared light from the planet's clouds. The blue areas show clouds low in the atmosphere, while the yellow and orange areas represent high clouds. The rings comprise a sheet of icy rocks orbiting around the equator of Saturn. Saturn itself is a ball of gas with its gaseous surface forming turbulent cloud bands. Two of Saturn's moons are visible as dots: Dione (yellow, lower left), and Tethys (green, upper right edge of Saturn's disc).