According to Ptolemy, which of the following celestial objects do not move in epicycles?(Select All the answers that are correct)Group of answer choicesMercuryVenusMarsJupiterSaturnSunMoon
Question
According to Ptolemy, which of the following celestial objects do not move in epicycles?(Select All the answers that are correct)Group of answer choicesMercuryVenusMarsJupiterSaturnSunMoon
Solution
According to Ptolemy's geocentric model of the universe, all celestial bodies, including Mercury, Venus, Mars, Jupiter, Saturn, the Sun, and the Moon, move in epicycles. Therefore, none of the options provided in the question are correct. Ptolemy's model was based on the idea that each of these bodies moved in a small circle (an epicycle), while the center of this circle moved around the Earth on a larger circle (a deferent).
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