Born at
Genoa, he was a member of the
Olivetan order. His order sent him to
Rome in 1623. He met Galileo at
Siena in 1633. Galileo had Reinieri update and attempt to improve his astronomical tables of the motions of
Jupiter's moons, revising these tables for prediction of the positions of these satellites. Reinieri's work led him to
Arcetri, where he befriended
Vincenzo Viviani. Reinieri enjoyed the same spirit of inquiry and love of debate as his mentor. On 5 February 1641 Reinieri wrote to Galileo from
Pisa: "Not infrequently I am in some battle with the
Peripatetic gentlemen, particularly when I note that those fattest with ignorance least appreciate your worth, and I have just given the head of one of those a good scrubbing." (Drake, p. 413-4) Reinieri became professor of mathematics at the
University of Pisa on the death of
Dino Peri. He also taught
Greek there. His astronomical work consisted of adding new observations of Jupiter's moons to Galileo's. To some degree, Reinieri improved the Galilean tables on the motions of these satellites. Before his death, Galileo decided to place all of the papers containing his observations and calculations in the hands of Reinieri. Reinieri was to finish and revise them. Reinieri's observations of Jupiter's moons remained unpublished at the time of his premature death at Pisa in 1647. He was succeeded to the chair of mathematics by Famiano Michelini (c. 1600-1666). ==Legacy==