Plato's Eudoxis and Aristotle's Cosmology

This chapter explores the concepts of cosmic spheres in Western cosmology, focusing on Plato's eudoxis of Kneidos and his system of invisible spheres to explain celestial motions. It then delves into Aristotle's cosmology, discussing his theory of the heavens, the placement of the unmoved mover, and the interaction between the sub-lunary world and the celestial realm.