What was Aristotles astronomic discovery?

Answer 1

Aristotle really didn't make any discoveries. In fact, Aristotle may have been the WRONG-EST man who ever lived. His knowledge of chemistry was laughable; his physics were primitive. Aristotle wrote that heavier objects fall faster than light ones, which Galileo proved wrong 1500 years later.

His incorrect writings about medicine and physiology may have killed more people than any other person. For example, Aristotle wrote that women have fewer teeth than men do. He was wrong. He was MARRIED; why didn't he ask his wife to open her mouth, and LOOK? Aristotle insisted that logic and philosophy outweigh evidence and experiment, which is entirely ANTI-science.

Aristotle's pig-headed ignorance, and the insistence of his followers that Aristotle must have been right because he was so famous may have retarded the development of all the sciences for two thousand years.

In astronomy, Aristotle insisted that the Sun, Moon and all the planets went around the Earth in perfect circles. Astronomers labored for 1800 years trying to figure out what sorts of circles, before finally accepting that Aristotle had been completely wrong.