Published By
Created On
16 Jan 2021 06:58:46 UTC
Transaction ID
Cost
Safe for Work
Free
Yes
More from the publisher
85288
Author: Martin Rees
File Type: pdf
How did a single genesis event create billions of galaxies, black holes, stars and planets? How did atoms assemblehere on earth, and perhaps on other worldsinto living beings intricate enough to ponder their origins? What fundamental laws govern our universe?This book describes new discoveries and offers remarkable insights into these fundamental questions. There are deep connections between stars and atoms, between the cosmos and the microworld. Just six numbers, imprinted in the big bang, determine the essential features of our entire physical world. Moreover, cosmic evolution is astonishingly sensitive to the values of these numbers. If any one of them were untuned, there could be no stars and no life. This realization offers a radically new perspective on our universe, our place in it, and the nature of physical laws.Amazon.com ReviewJust six numbers govern the shape, size, and texture of our universe. If their values were only fractionally different, we would not exist nor, in many cases, would matter have had a chance to form. If the numbers that govern our universe were elegant--1, say, or pi, or the Golden Mean--we would simply shrug and say that the universe was an elegant mathematical puzzle. But the numbers Martin Rees discusses are far from tidy. Was the universe tweaked or is it one of many universes, all run by slightly different, but equally messy, rules?This is familiar ground, though rarely so comprehensively explored. What makes Reess book exceptional is his conviction that cosmology is as materialistic and as conceptually simple as any of the earth sciences. Indeed, blockquotecosmology is simpler in one important respect once the starting point is specified, the outcome is in broad terms predictable. All large patches of the universe that start off the same way end up statistically similar. In contrast, if the Earths history were re-run, it could end up with a quite different biosphere.blockquoteRees demonstrates how the cosmos is full of fossils from which we can deduce how our universe developed as surely as we infer the earths past from the relics found in sedimentary rocks. Reess theme is nothing less than the colossal richness of the universe. It is an ambitious book, but if anything, it deserves to be longer. --Simon Ings, Amazon.co.ukFrom Library JournalScience writer and astronomer Rees summarizes the history of the universe, pointing out that six numbers related to basic physical constants (for example, the relative strengths of the gravitational and electromagnetic attraction) determine how the universe developed. In addition, he shows how, if these numbers were only slightly different, stars and galaxies would not form, complex chemistry would not be possible, and life could not evolve. This raises the interesting philosophical question, Why? One could dismiss the question by saying that, if it were otherwise, we wouldnt be here to ask or that there is some underlying theory as yet unknown that would show that these values must be what they are. However, Rees suggests that these numbers were set shortly after the big bang and could well have been different. Indeed, there may be a multitude of other universes, forever inaccessible to us, in which they are different. Thus, with a huge choice of possible universes, one must exist that could support intelligent beings who can observe and question. Whether one agrees or not with Reess ideas, his book is recommended for its cogent synopsis of modern cosmologic thought. [BOMC alternate selection.]--Harold D. Shane, Baruch Coll., CUN.---Harold D. Shane, Baruch Coll., CUNY 2000 Reed Business Information, Inc.
Transaction
Created
1 year ago
Content Type
Language
application/pdf
English