French astronomer and geodesist. Born 1677, died 1756.

In 1712, Cassini followed in the footsteps of his father, Giovanni Domenico Cassini, as director of the Paris Observatory. Cassini is particularly famed for his measurements of the movements of the moons of Saturn, and of the libration of the Moon. In 1713, furthermore, he measured the meridian arc from Dunkerque to Paris, publishing the results in 1720.

See also:
Giovanni Domenico Cassini (his father),
César François Cassini de Thury (his son),
Jacques-Dominique Cassini (his grandson), and
Cassini (space probe).

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