Final answer:
The difference between the Heavenly Bodies and the Unmoved Mover lies in their essence. Heavenly Bodies refer to celestial objects in motion, while the Unmoved Mover is a motionless divine being.
Step-by-step explanation:
The difference between the Heavenly Bodies and the Unmoved Mover can best be explained by Essence. Essentially, the Heavenly Bodies refer to celestial objects such as stars, planets, and moons, which move through space and have their own individual essence. On the other hand, the Unmoved Mover is a concept proposed by philosophers like Aristotle and Aquinas, which refers to a divine being that is motionless and the ultimate cause of all motion in the universe.