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Which two cosmologist hypothesized why the planets sometimes appear to move backward in the sky?
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Which two cosmologist hypothesized why the planets sometimes appear to move backward in the sky?

User Marcelo Tataje
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Answer:

  1. Greek astronomer Ptolemy
  2. Greek astronomer Apollonius of Perga

Step-by-step explanation:

This phenomena is referred to as the apparent retrograde motion.

User Wael Alshabani
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