How did Aristotle believe in the solar system?

Answer 1

Aristotle noticed that everything moves itself or was moved by something else. Since observation fails to disclose something moving stars and planets, Aristotle concludes that these bodies move themselves. Anything moving itself must be alive, for that is how it moves itself, so Aristotle concludes that stars and planets must be alive.

Answer 2

Aristotle subscribed (and contributed additional notions) to the geocentric model, sometimes referred to as the Ptolemaic system, in which the Earth was at the center of the solar system and other bodies rotated around it. He believed that the Sun, moon, planets (and also stars) were embedded in celestial spheres ("crystal spheres") which rotate eternally at fixed rates (and had certain qualities) and that this explained the motion and other properties of the celestial bodies.

Answer 3

Aristotle believed in a geocentric model of the solar system, where Earth is at the center and the Sun and other celestial bodies revolve around it. He thought the planets and stars were embedded in a set of concentric spheres.