Big History Scientist Timeline By ORBit92 Period: 85 to 165 Life of Claudius Ptolemy Period: 1473 to 1543 Life of Nicolaus Copernicus 1514 Copernicus releases his first heliocentric model Period: 1564 to 1642 Life of Galileo Galilei 1632 Galileo releases book Galileo publishes: Dialogue Concerning the Two Chief World Systems Period: 1643 to 1727 Life of Issac Newton 1687 Issac Newton Releases book Publication of: Mathematical Principles of Natural Philosophy Period: 1889 to 1953 Life of Edwin Hubble 1924 Edwin shows that there are galaxies beyond Milky Way Edwin shows that there are galaxies beyond Milky Way