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General relativity from A to B Robert Geroch
Publisher: U.Chicago

That the Global Positioning System undercuts general relativity. Special relativity had considered only constantly moving reference .. Cosmologist Lawrence Krauss writing in the Wall Street Journal says that Hawking does not go far enough, but his argument is based on a misunderstanding of energy in general relativity. TVF's Speed of Gravity paper undercuts special relativity. I disagree because it is in fact zero for closed universes with positive curvature too. That's definitely true for physicists because the best interpretation of General Relativity supports B-Theory (though I've seen any physicist talk in terms of “A” or “B” Theory of Time). The approach of the Christian apologist is to argue that if B is the big bang, then the only cause, A, available is God, because nothing physical can precede the big bang. You are saying that if the energy is zero then it is flat. "General Relativity from A to B" explained to me the meaning of the radar-coordinates (emphasizing operational measurements) and the meaning of the spacetime interval (emphasizing the causal structure). However, you are using the converse of this statement. Researchers have confirmed two predictions of Albert Einstein's general theory of relativity, concluding one of NASA's longest-running projects. Seems very silly that people often cite the size of Earth/human beings in relation to the universe as a measure of each human's 'insignificance'. A decade after his paper on special relativity, Einstein published his general relativity that addressed accelerated reference frames and provided a new theory of gravity. Bethell made three claims in this 1999 article, using TVF as his primary source: A. Of course general relativity is really about semi-Riemannian geometry [though physicists like to refer to it as merely 'Riemannian'], so you would want to also refer to texts like O'Neill's Semi-Riemannian Geometry With Applications to Relativity.