When was aristotles' model discovered?

Answer 1

Aristotle's model of the universe, which posited that the Earth was at the center and that celestial bodies moved in perfect circles around it, was developed in the 4th century BCE. His ideas were influential for many centuries, particularly during the medieval period, before being challenged by the heliocentric model proposed by Copernicus in the 16th century. Aristotle's concepts were largely based on observational data available at the time and were formalized in his works, such as "On the Heavens."