How did Copernicus contribute to the Big Bang theory?
I'm not sure that Copernicus considered all of the implications of what would later be called the "Big Bang theory," but he was the first man to put forward the notion that the Sun was the center of the universe. In 1514, Nicolaus Copernicus (1473-1543), a Polish astronomer, first discounted the accepted geocentric system advanced by Ptolemy nearly 14 centuries earlier. Copernicus' idea, known as the heliocentric system, proposed the theory that all of the planets revolved around the Sun. More than four centuries would pass before Fred Hoyle coined the term "Big Bang" in 1949.