Who Are the Heroes of Science? Before the Time of Christ University Professors of Two Thousand Years Ago Roger Bacon Copernicus and His Famous Theory Tycho Brahe Johann Kepler Galileo Galilei Galileo before the Dreaded Inquisition A Glimpse of Galileo's Private Life The Great Sir Isaac Newton More about Sir Isaac Newton Benjamin Franklin Franklin as a Scientist The Rev. Dr. Joseph Priestley The Hon. Henry Cavendish William and Caroline Herschel Herschel Becomes a Professional Astronomer John Dalton