Bingo!!! Well done. In my opinion, as I have told Schmelzer repeatedly, his ether paper is just another scientific paper that at best mimics GR and at worst promotes the long defunct luminiferous ether scenario. Michelson/Morley experiment invalidated that. Spacetime/universe is all there is, and it is against this which understand the nature of SR and GR. "The views of space and time which I wish to lay before you have sprung from the soil of experimental physics, and therein lies their strength. They are radical. henceforth, space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality." Hermann Minkowski This new reality was that space and time, as physical constructs, have to be combined into a new mathematical/physical entity called 'space-time', because the equations of relativity show that both the space and time coordinates of any event must get mixed together by the mathematics, in order to accurately describe what we see. https://einstein.stanford.edu/content/relativity/q411.html The discussion about an ether is much ado about nothing. Please Register or Log in to view the hidden image!