The biggest difference between the geocentric and heliocentric models of our solar system lies in the center point around which the celestial bodies orbit.
-
Geocentric Model: This ancient model posits that the Earth is at the center of the universe, and all celestial bodies, including the Sun, Moon, planets, and stars, orbit the Earth. This view was widely accepted in ancient civilizations and was notably formulated by Claudius Ptolemy in the 2nd century AD.
-
Heliocentric Model: In contrast, the heliocentric model, proposed by Nicolaus Copernicus in the 16th century, suggests that the Sun is at the center of the solar system, and the Earth, along with other planets, orbits around the Sun. This model not only simplified the understanding of planetary motion but also laid the foundation for modern astronomy.
In summary, the geocentric model centers around Earth, while the heliocentric model places the Sun at the center, fundamentally changing our understanding of the structure of our solar system.