1. Adherence to the geocentric model stemmed largely from several important observations. 2. Astronomical clocks usually represent the solar system using the geocentric model . 3. The geocentric model was eventually replaced by the heliocentric model. 4. These were based on a Ptolemaic, geocentric model of the solar system. 5. Not all Greeks agreed with the geocentric model . 6. We approach the scroll and see that it depicts a geocentric model of the universe. 7. In the Geocentric model , Saturn was on the highest planetary sphere, the seventh. 8. His late writings focused on the Geocentric model and cosmological speculation and remain mostly unpublished. 9. It is essentially a geocentric model ; the Earth is at the center of the universe. 10. The Geocentric model was developed primarily by Greek philosopher Aristotle and Greco-Egyptian astronomer Ptolemy.