Saturns moon Titan Cassini images Naturalcolour image left and infrared image right of Titan the largest moon of Saturn Titans atmosphere is predominantly nitrogen with sunlight causing traces of methane to form clouds of complex hydrocarbons with liquid hydrocarbons on the surface The infrared image penetrates the haze showing lowerlevel clouds and surface features These images were taken from a distance of around kilometres using a range of spectral filters They were obtained on March with the narrowangle camera of Cassinis Imaging Science Subsystem ISS The Cassini spacecraft has been surveying the Saturnian system since with its mission scheduled to end in September NasaJplCaltechSpace Science InstituteScience Photo Library