Galileo Galilei Portrait of Galileo Galilei by Giusto Sustermans Born 15 February 1564[1] Pisa,[1] Duchy of Florence, Italy Died 8 January 1642 (aged 77)[1] Arcetri,[1] Grand Duchy of Tuscany, Italy Residence Grand Duchy of Tuscany, Italy Nationality Italian (Tuscan) Fields Astronomy, physics and mathematics Institutions University of Pisa University of Padua Alma mater University of Pisa ...