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How did Ptolemy adapt the geocentric model so he could account for the motion of the planets?

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User Swapnil Sonar
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Answer:

The most important solution to this problem was proposed by Claudius Ptolemy in the 3rd century AD. He argued that planets move on two sets of circles, a deferent and an epicycle. This explained retrograde motion while keeping the planets in their circular orbits around the Earth.

Step-by-step explanation:

User ORole
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