In 1633, Galileo Galilei was put on trial at Inquisition headquarters in Rome. He had been controversial for years, because he presented a “theory” that the Sun, not the Earth, was the center of our universe and the Earth went around the Sun. Somehow the idea of this famous scientist had been allowed to stand, so long as it was presented as a hypothetical and not as reality.Galileo was the first astronomer to use a telescope to study the heavens. His brilliant thinking became much too clear in his book, “Dialogue on the Great World Systems, Ptolemaic and Copernican” in 1632.