The work of Galileo there. Outstanding work, such as technical development of telescopes and astronomy telescope observation from telescopes developed more and more.He is a person who make a change to the concept of science, the first completely. By adhering to his own theories that planets and revolves around the sun.That he was forbidden to teach his students about this theory. Otherwise, it will be caught fire. He invented the telescope myself to learn more and prove that the theory of his is true at last.