Original: For his French-born great-grandson, see Jean-Dominique Cassini. Giovanni Domenico Cassini (June 8, 1625 â "September 14, 1712) was an Italian\/French mathematician, astronomer, engineer, and astrologer.
Simplified: Giovanni Domenico Cassini, also known as Jean-Dominique Cassini, (June 8, 1625 â "September 14, 1712) was an Italian-French astronomer, engineer and astrologer.