Does the Earth Move?

by George L. Murphy

Einstein’s theory of relativity means, among other things, that a modified version of Tycho Brahe’s earth-centered model of the planetary system is, in principle, as good as Copernicus’ sun-centered model. The question of whether the earth or the sun “really” moves is meaningless in this theory. After dealing with challenges to this claim, . . . → Read More: Does the Earth Move?

 

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