Career
His learning as displayed in his collected works is very broad. He had a wide experience: as soldier, academic, diplomat and in the chancery of Ippolito d"Este. He was consulted by Richard Croke on behalf of Henry VIII of England in the question of the latter"s divorce.
Giovanni Battista Giraldi was a student of his, and succeeded him at the University of Ferrara.
He had a contemporary reputation as an astronomer, and wrote on the rotation of the earth. He knew Copernicus in Ferrara at the beginning of the sixteenth century.
His Quod Caelum Stet, Terra Moveatur is a precursor of the De Revolutionibus of Copernicus, though A. C. Crombie qualifies his rotational theory as "vague", and is often dated to about 1525.