Gian Domenico Cassini | French astronomer |
Gian Domenico Cassini, French JeanDominique Cassini (born June 8, 1625, Perinaldo, Republic of Genoa [Italy]—died September 14, 1712, Paris, France), Italianborn French astronomer who, among others, discovered the Cassini Division, the dark gap between the rings A and B of Saturn; he also discovered four of Saturn''s moons.