Eyeful of Saturn . ... Credit Copyright: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: Now a bright speck of light wandering through Earth's night sky, magnificent planet Saturn lies nearly 1.5 billion kilometers from the Sun . ... Tip to tip, the ring system spans about 270,000 kilometers. Named for discoverers , the large, easily visible gap in the rings is known as the Cassini division, while the narrower outer gap is the Encke division. ... NASA Official: Jay Norris. ...