Ptolemy backed Aristotle’s idea that the earth stood still at the center of the universe and was surrounded by a series of clear spheres nestled within each other, upon which the sun, the planets, and the stars were fixed.
Ptolemajs atbalstīja Aristoteļa priekšstatu, ka Visuma centrā atrodas nekustīga Zeme un ka to iekļauj daudzas koncentriskas caurspīdīgas sfēras, pie kurām ir piestiprinātas Saule, planētas un zvaigznes.