Which idea of the geocentric model of the solar system was not contested by some philosophers?

Answer 1

In the geocentric model of the solar system, which places the Earth at the center with the Sun, Moon, planets, and stars revolving around it, one idea that was widely accepted and not contested by many philosophers was the notion that the heavens were perfect and unchanging. This idea stemmed from the belief that celestial bodies were made of a different, more perfect substance than terrestrial matter. Philosophers like Aristotle and Ptolemy held that the heavenly spheres moved in perfect circular motions, reflecting an idealized view of the universe. While specific details of the geocentric system, such as the nature of planetary orbits, were debated, the overarching concept of the heavens' perfection remained largely uncontested until the advent of the heliocentric model proposed by Copernicus and later developments in astronomy.