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Hereโs how the items can be categorized based on whether they relate to Aristotle's model, Ptolemy's model, or both:
**Aristotle's model:**
- planets fixed on nested spheres
- geocentric
**Ptolemy's model:**
- accurately predicted the positions of the planets
- planets fixed on epicycles
- geocentric (can apply to both models, but heavily emphasized in Ptolemy's model)
**Both:**
- geocentric (both models were geocentric)
This categorization highlights how both models placed the Earth at the center of the universe, but they differed in their descriptions of planetary motion.