Who are involve in geocentric theory?

Answer 1

Plato and his student Aristotle believed in the geocentric theory. It was the ruling explanation model about how our solar system was put together for several hundreds of years.

Answer 2

There is no "geocentric theory". Anybody who takes more than a trivial interest in the world around him knows that the Earth orbits the Sun. Even the ancient Greek mathematicians like Aristarchus of Samos knew this.

The idea that the Sun and everything go around the Earth, with the Earth at the center ("geo" means "Earth", and centric means "goes around") is an obvious notion; any farm child can see this. People like Aristotle never gave any thought past the most obvious one.

Aristotle himself was probably the wrong-est person in history; virtually everything that he wrote was ignorant and wrong, sometimes aggressively so. He is probably responsible for more death and disease than any other person on the Earth. His astronomy was childish, his medical writings laughably wrong, his ethics toxic, and his science foolish. When Science Fiction authors write stories about evil space aliens who came to Earth in the distant past to keep humanity ignorant and divided, Aristotle is their number one role model.