Keywords: Jean Dominique Cassini.jpg Giovanni Domenico Cassini Source http //saturn jpl nasa gov/cgi-bin/gs2 cgi path /multimedia/images/mission/images/image2 jpg type image http //saturn jpl nasa gov atravez http //de wikipedia org/wiki/Bild Jean_Dominique_Cassini jpg Jean Dominique Cassini 1625-1712 discovered Saturn's moons Iapetus Rhea Tethys and Dione In 1675 Cassini discovered that Saturn's rings are separated into two parts by a gap The gap is now called the Cassini Division in his honor PD-Art Giovanni Cassini Artworks missing infobox template |