Clip is from June '07 to May '08. As Earth catches up with Mars, it goes into retrograde motion starting November 15th, 2007. After we pass the red planet it goes back to normal motion on January 3...
Clip is from June '07 to May '08. As Earth catches up with Mars, it goes into retrograde motion starting November 15th, 2007. After we pass the red planet it goes back to normal motion on January 30th, 2008.
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So it's basically an illusion, when earth passes mars and mars is till going the same speed, mars looks like it goes right for a bit, then continues going left.
Like 9amtoxic mentioned, from the perspective of ancient Earth astronomers, their observations didn't make sense until they accepted a model that had the Earth orbiting the Sun like all the other planets.
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Ancient
astronomers were unable to come up with a satisfactory explanation for
it.