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But What About Planet Speed?

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Posted by Lori Agan on February 17, 2001 17:14:37 UTC

Sorry this wasn't clear earlier. The geocentric model did not allow the planets to vary in speed. Any such observational discrepancies were made up for by these deferent and ecicycle circles. The planets were thought to travel at constant speed, but their paths appeared to change as they made their way around the various circles.
Only when the nature of the elliptical path became apparent were the planets' varying speeds necessary to explain observation.

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