Answer:
Geocentric theory: Earth is the center of the universe.
Heliocentric theory: The Sun is the center of the universe.
Explanation:
The geocentric theory was formulated by Aristotle and says that the earth is the center of the universe and the other planets and stars including the sun revolve around it.
On the other hand, Copernicus with his heliocentric theory states that the sun is the center of the universe and the planets revolve around it.
