The geocentric model is a debunked theory that the Earth is the center of the universe, with the sun and planets revolving around it. When you purchase through links on our site, we may earn an ...

The answer took a while for astronomers to figure out, leading to a debate between what is known as the geocentric (Earth-centered) model and the heliocentric (Sun-centered model). The ancients ...

After all, the ancient geocentric universe of Ptolemy was able to account for the observed motion of the sun, moon and planets by using the complicated motion of epicycles—circles embedded ...