1. Nicolaus Copernicus
... a treatise on monetary reform, and turned his attention toward astronomy, a subject which had interested him for a long time. Copernicus decided to challenge the theory of Ptolemy, which was that the earth was motionless and the center of the universe. He believed that Ptolemy's theory was too complicated and he decided that the most simplest and logical explanation was that the earth had to ... sets, but we know its the earth that moves, not the sun. His theory assumed that the earth was like any other planet. It wasn't the center of the universe. He was questioning the physics of Aris...
- Word Count: 619
- Approx Pages: 2