Pythagoras

Pythagoras was a Greek astronomer and mathematician, born in 572 B.C., in Greece. He believed that everything was related to mathematics and that through mathematics everything could be predicted and measured in rhythmic patterns or cycles. Out of his four mathematical arts, he placed astronomy as one of them and the others being arithmetic, geometry and music. Pythagoras is most known for his theorem, known as the ‘Pythagorean Theorem.’ The Pythagorean Theorem is that ‘'The square of the hypotenuse of a right-angled triangle is equal to the sum of the squares on the other two sides.’ More simply put, a²+b²=c². Pythagoras believed  in the ‘harmony of spheres’ which meant that the planets and stars moved according to mathematical equations, which corresponded to musical notes and thus produced a symphony. Pythagoras was also one of the first to think that the Earth was round, a theory that was finally proved around 330BC by Aristotle. He was sure that the Earth and each of the other bodies in the Universe was a sphere and that they all revolved about one central body. Pythagoras did not take the Sun as a central position, but he imagined an area of central fire. Around this there revolved ten bodies: the Sun, the Earth, the Moon, the five planets which were known at that time, heaven with its stars and a newcomer named Antichthon or "the counter-Earth". Pythagoras had a very strong impact on Astronomy and it’s history.