Compléter Theories about the universeVersion en ligne Theories about the universe par Nerea Fontecha 1 The theory defends that the Earth is at the centre of the universe and the planets and the revolve around it in circular orbits . and developed that theory . On the other hand , the theory states that the Sun is at the centre of the universe and the and other planets revolve around it in circular orbits . Only revolve around the planets . Earth´s satellite is the . Nicolas , Galileo and Johannes were great defenders of the theory .