Geocentric vs Heliocentric Model of the Universe
Learn how a geocentric view of the universe is different than a heliocentric model of the universe.
The geocentric view, which has the Earth at the center of the Universe was accepted for many years. However, it could not explain the backward movement of some planets.
The sun-centered view of the universe was proposed by Copernicus and later modified by Kepler and other great minds.