Galileo Galilei was born (1564-1642) in Pisa, Duchy of Florence, Italy in 1564 to a poor but noble family. His parents recognised their child’s innate intelligence and talents and made sacrifices to have him educated. At his father’s insistence, Galileo studied the profitable career of medicine. But, at the University of Pisa, Galileo became fascinated by a wide range of subjects. He also became critical of many of Aristotle‘s teaching which had dominated education for the past 2,000 years. Galileo Galilei was Italian astronomer, scientist and philosopher, who played a leading role in the Scientific Revolution. Galileo improved the telescope and made many significant discoveries in astronomy. His findings encouraged him to speak out for the Copernican view that the earth revolved around the sun. However, his views were considered heretical, and he was placed under house arrest. His greatest scientific works included Two New Sciences about kinetics and the strength of materials.