... Saturns Moon Dione from Cassini . ... The above image was taken at the end of October from a distance of about one million kilometers. ... The clouds are caused by cold air moving over a warm water and result in bands of lake-effect snow. The rising bands of moistened, warmed air that drop lake-effect snow alternate with clear bands of falling cold air. ... When the robot spacecraft Cassini swooped past Saturn's moon Titan last month, however, radar images showed few craters. ... October 2012 . ...