What is logical explanation for acceleration in expansion rate of the universe?

Answer 1

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The Doppler Effect provides evidence that the universe is expanding. However, the redshift observed may be due to light climbing out of a gravity well (a star). Bigger stars can been seen from further away. Bigger stars have a greater redshift (due to size of the greater gravity well). So maybe the Universe doesn't expand as we were lead to believe? Or maybe it does.

Answer 2

This is "the theory" which may explain the acceleration, that is taking place in the universe. Our universe is surrounded by some 4 such universes, probably four pre big bang masses. In turn the four pre big bang masses are surrounded by four universes. Those universes are surrounded again four pre big bang masses. So one universe is surrounded by four pre big bang masses and one pre big bang mass is surrounded by four universes. You can find the structure of carbon atoms in case of diamond to imagine the same. So your universe is getting acceleration due to gravitational forces of the four pre big bang masses and other universes. So there is probably nothing like "dark energy", which "push" the universe. But there are probably four "pre big bang masses" and other universes, which are "pulling" your universe from the "out side" to give acceleration to your universe. It may take another billions of years, for your universe to "fall", on those pre big bang masses. Once your universe "fall" on such pre big bang masses, that will initiate "big bang" there in those pre big bang masses. This theory also explains to why the acceleration in expansion of the universe did not start from the starting of the big bang. The big bang started at the point, where the gravitational force of the outer universes was zero, like Lagrangian points. Once your universe started to expand, it drifted more and more from this zero gravity point. That gave an opportunity to outer pre big bang masses and universes to pull your universe apart, giving it an acceleration.