Galileo Galilei was one of the greatest astronomer and mathematician of the seventeenth century. His support of support of Copernican cosmology against the Church’s strong opposition and his development of a telescope and his unorthodox opinions as philosopher of science were the central concerns of his career. He struggled brutally for freedom from the higher authority because of unable to resist his appetite for scientific investigation. However, Galileo’s science and career did not get him any where farther in his life; he was forced to withdraw his theories before the inquisition, and was sentenced to indefinite imprisonment by the pope and eventually became blind. Life of Galileo is