Galileo Galilei Father of Modern Science Astronomy Key Ring

Portrait of Galileo Galilei 1564-1642 an Italian mathematician, philosopher and astronomer. Galileo, though not first inventor of the refracting telescope in 1609, enhanced its power, which enabled him to see that the Moon had mountains and that Jupiter had satellites. His championship of the Copernican (Sun-centred) planetary system brought him into serious conflict with the Roman Catholic church, which forced him to make a public recantation and put him under restriction in later life. This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1928.