- First name
- Giovanni Domenico
- Last name
- Cassini I
- Date of Birth
- 1625
- Date of Death
- 1712
- Born in
- Perinaldo
- Died in
- Paris
Giovanni Domenico Cassini I taught astronomy in Bologna. He was the director (1671) of the Royal Observatory in Paris. His brilliance and reputation rests upon many scientific achievements: the ‘Cassini ovals’, the first measurement of the size of France, and the discovery of the big red spot on Jupiter, an observation he shared with Robert Hooke. See DSB, vol. 3, pp. 100–4; Van Helden, 1999, pp. 48–65.