Lesson 86: The Heliocentric Theory Lesson 87: Copernicus Lesson 88: Vesalius Lesson 89: âœï¸The Pencil âœï¸ The Heliocentric Theory / Nicolaus Copernicus Nicolaus Copernicus invented the The Heliocentric Theory, and challenged Aristotle’s theory that the Earth is at the center of the universe. Now, into the theory that has been proved out of a theory …