... I Zwicky 18: Young Galaxy . ... Caught in sunlight, icy moon Mimas shines above a broad shadow across gas giant Saturn. In this remarkable image from the Cassini spacecraft, tiny Mimas is at the upper right. ... Saturns Moon Dione from Cassini . ... Recent and likely future images of this unusual moon by the robot Cassini spacecraft now orbiting Saturn might help us find out. ... The clouds are caused by cold air moving over a warm water and result in bands of lake-effect snow. ...