Now comes geometry and the concepts of perfection. Planetary Motion is governed by geometric laws Geometry begets Harmony Aristotle introduces the Two Sphere Universe.
Some elements are more important than others.
Some things have dominion over other things. Furthermore, Aristotle tells us that the Universe is perfect and unchanging. Clearly, imagination has now vanished. Aristotelian model makes a definite prediction all planets and stars should move in the same direction . Thus for the first time we see the ideas of relativity, homogeneity and non-uniqueness expressed.