Carl Sagan Francis Crick Alan Turing Philo Farnsworth Stephen Hawking Nicolaus Copernicus Galileo Galilei Charles Darwin Robert Goddard Alexander Fleming Edwin Hubble James Watson Albert Einstein Jean Piaget Leo Baekeland Archimedes of Syracuse Isaac Newton Kurt Godel Hippocrates Jonas Salk William Shockley Sigmund Freud Rachel Carson John Maynard Keynes Enrico Fermi