A Universe from Nothing
by Lawrence M. Krauss
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One of the few prominent scientists today to have crossed the chasm between science and popular culture, Krauss describes the staggeringly beautiful experimental observations and mind-bending new theories that demonstrate not only can something arise from nothing, something will always arise from no... More

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3 + 3 in other languages
Kin YipKin Yip wrote a review
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Spoiler Alert
It's not really a book for a knowledgeable physicist to be inspired as to how the Universe could come about from nothing. It's more for people who like to find materials to debate about or against the existence of the God/Creator. I also don't believe that it's a book with the deadliest blow to supernaturalism in cosmology as Charles Darwin's "On the Origin of Species" in biology, as Richard Dawkins said in the "Afterword" of this book.

As in many books, this book describes well the basics all the way to the discovery of the accelerated expansion of our universe. But then it becomes very murky when the author discusses something from nothing. Partly probably because "nothing" is not well-defined. Partly probably because the inflationary universe is not yet a very exact or step-by-step science yet. But interestingly, the various scenarios of eternal inflation or multiverse have become a useful weapon to do away with the necessity of the Creator or First Cause. In these scenarios, the anthropic principle seems to be an unavoidable necessity. I think the author's sentiment about this is probably typical among scientists, ie. though the scientists feel sad to accept the anthropic principle (rather than a fundamental theory with all the constants fixed), they can get over their prejudice if this idea turns out to be true.

But the author does explain well, probably by saying it more than one time, the negative gravitational pressure as the possible source for the dark energy or a constant hidden energy density (like cosmological constant) in the expanding universe --- in a manner just the opposite to the expanding balloon cooling down due to the positive pressure inside.

p.42 (16th-17th lines): "... may be old enough have seen ..." should be "... may be old enough to have seen ...", I think.
ariadna73ariadna73 wrote a review
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We are dust... ect.
Check my review in Spanish here: lunairereadings.blogspot.com/2012/03/universe-from-nothing-lawrence-krauss.html
According to the author, the purpose of this book is to picture the universe and by doing so, separating wheat from chaff in the scientific theories. I liked it because even when I did not understand a whole bunch of it, I could grasp that our universe came to existence and is going to a big nothingness. There is no purpose or goal in any of what we do, and therefore, we must do the best we can with what we have, because there is no real point in suffering or bad behaviour. Another thing I liked a lot is the idea that the universe is kind of "running" from us, and that it doesn't matter how fast science advances, we will be always billions of years behind any possibly observable phenomenon; hence we are doomed when our goal is to explain these kind of cosmological things.