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Quintessence: The Mystery of Missing Mass in the UniverseWill the universe continue to expand forever, reverse its expansion and begin to contract, or reach a delicately poised state where it simply persists forever? The answer depends on the amount and properties of matter in the universe, and that has given rise to one of the great paradoxes of modern cosmology: there is too little visible matter to account for the behavior we can see. Over ninety percent of the universe consists of "missing mass" or
Will the universe continue to expand forever, reverse its expansion and begin to contract, or reach a delicately poised state where it simply persists forever? The answer depends on the amount and properties of matter in the universe, and that has given rise to one of the great paradoxes of modern cosmology: there is too little visible matter to account for the behavior we can see. Over ninety percent of the universe consists of "missing mass" or "dark matter" - what Lawrence Krauss, in his classic book, termed "the fifth essence."In this new edition of T he Fifth Essence, retitled Quintessence after the now widely accepted term for dark matter, Krauss shows how the dark matter problem is now connected with two of the hottest areas in recent cosmology: the fate of the universe and the "cosmological constant." With a new introduction, epilogue, and chapter updates, Krauss updates his classic for 1999 and shares one of the most stunning discoveries of recent years: an anti-gravity force that explains recent observations of a permanently expanding universe.Binding Type: Paperback
Publisher: Basic Books
Published: 12/21/2000
ISBN: 9780465037414
Pages: 384
Weight: 0.98lbs
Size: 8.59h x 5.48w x 0.81d
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4.2 ★★★★★
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Product Reviews
★★★★★ 1
Not an accurate book for a true spiritual seeker.
Format: Paperback
Don't waste your money. Once I read the 3rd eye may appear as the eye of Sauron from Lord of the rings, and all you have to do is cross your eyes and Boom there it is, I stopped wasting my time. All I received was a headace and major strain. After studying Kriya Yoga and what I've learned through the practices regarding the 3rd eye I just couldn't continue. You can read this in an hour or so. It's speaks of affirmations, mantras that's all good. If your just starting this journey I wouldnt recommend this. Look for books written by paramahansa yogananda, just my opinion and what worked miracles for me. This book was a gift or Id return. Again just my opion, if it helps you wonderful, I wouldn't pay .50 cents for this book.
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Reviewed in the United States on January 3, 2026
★★★★★ 5
quick and simple read, very grateful to Sage for writing this…
Format: Kindle
I have been curious about the 3rd Eye for some time and it is very cool that Sage has made accessing it this easy. I think I am getting closer to really seeing my 3rd Eye and I am excited by the possibilities! Thanks again, Sage.
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Reviewed in the United States on September 23, 2025
★★★★★ 5
Packed with info.
Format: Paperback
Good informational book
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Reviewed in the United States on December 12, 2025
★★★★★ 1
I can sum up this whole book in a single paragraph
Format: Paperback
Every other page is a stock picture from wherever; while the message and practice are helpful, this should have been a pamphlet instead of a book -remember Cliffsnotes? Look at the author photo in the back of the book and consider it for a moment, what does your gut tell you? Hopefully you too can glean something from it.
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Reviewed in the United States on December 12, 2025
★★★★★ 1
Not Worth The Money
Format: Paperback
ai garbage
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Reviewed in the United States on October 28, 2025