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Originally Posted by trth_skr
I am amazed at how many people try and disprove geocentricity using abberation, parallax, and other observations, as though these would not be the same in a geocentric system. They basically have to be the same. A coordinate transform does not change relative observations (nor does it prove the matter, of course).
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Abberation, parallax, and other observations are not used to show that there is no relative frame of rest for the Earth. They're used to show that there is no absolute frame of rest for the Earth.
There's a huge difference in saying that
only the g/Geocentric frame is valid and all frames are valid.
Edited because I'm incapable of conveying meaning today.