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Customer Review

on November 11, 2008
For amateurs interested in modern cosmology, this book is a fabulous treat. It poses all the problems and offers solutions that are empirically testable. No more dark matter. No more big bang. Wow!

Moffat's solutions derive from "MOG," or Modified Gravity theory. MOG, as Moffat explains, is similar to MOND, a modification of Newton's theory to accommodate observational data, such as the rapid rotation of galaxies. However, where as MOG has background independence as required by Einstein's theory of relativity, MOND does not. String theory does not have background independence either. So in this respect MOG is superior to both of these theories.

MOG eliminates the singularity at the centre of black holes. Hence, there is no event horizon surrounding the final state of a collapsed start, and no singularity at its centre. This nicely solves the black hole information-loss problem treated extensively in a recent book by Leonard Susskind.

MOG neatly handles the miracle of creation problem. No need to posit a big bang that defies the second law of thermodynamics. At the beginning of the MOG universe, both negative and positive time evolve with increasing entropy and cancel out.

MOG does not have dark matter, but instead posits a stronger gravity at the beginning of time than the standard model. The CMB does not need to arise from a big bang at all. In addition, the flatness and uniformity problem is solved by suggesting that the speed of light is not constant, but rather the ratio of G to c is. Hence, if G is stronger, c is faster, allowing all parts of the early universe to communicate.

I found that Moffat's book was best read in conjunction with Lee Smolin's recent book, "The Trouble with Physics." In his book, Smolin praises Moffat as a friend whom he respects for his boldness and originality. Perhaps they will write their next book together.
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