The Universe By LTrujillo Feb 19, 1473 Birth of Copernicus Period: Feb 19, 1473 to Jan 1, 2000 The Universe Feb 15, 1564 Birth of Galileo Jan 1, 1604 Galileo's First Known astronomical observation Jul 1, 1609 Galileo created the telescope Mar 3, 1613 Galileo published letter on sunspots Mar 3, 1637 Galileo wrote book summarizing all his ideas Jan 4, 1643 Birth of Newton Jan 1, 1687 Newtons Publication of Math. Principles of Natural Philosphy Mar 31, 1727 Isaac Newton Dies Nov 20, 1889 Birth of Hubble Jan 1, 1929 Hubble proved the universe was expanding/ moving away Jan 1, 1953 Hubble Dies