nsfw:racy: Likely ocr: GEOCENTRIC WORLD VIEW In Aristotle's (384 - 322BC) conception of the universe, the Earth was the fixed centre, and visible movements of the heavenly bod- ies including the Sun were caused by the smooth rotations of 56 concentric crystal spheres around the Earth. Furthest out was the sphere of fixed stars. The friction of the spheres created music, which only the sharpest ears could hear. The Earth was the centre of the universe because it was composed of heavy substances, which tend towards the centre. Aristotle div- ided the universe into sublunar and superlunar worlds. Perfect cir- cular mot ...
