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Dark Matter, Dark Energy, Dark Gravity: Enabling a Universe that Supports Intelligent Life by [Perrenod, Stephen]
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Dark Matter, Dark Energy, Dark Gravity: Enabling a Universe that Supports Intelligent Life Kindle Edition


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Kindle Edition, 17 Apr 2013
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Length: 142 pages Word Wise: Enabled Enhanced Typesetting: Enabled
Page Flip: Enabled Language: English

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Product Description

Dark Matter, Dark Energy and Dark Gravity make life possible! This book for the lay reader provides a summary of the latest astrophysical observational results and theoretical insights into what we know and what we hope to learn about dark matter, dark energy, and dark gravity. How did the profound beauty of our Earth, our Solar System, our Milky Way galaxy and indeed our universe unfold? Dark matter, dark energy, and dark gravity have made all the difference in how the universe has developed, and have been key to creating the overall environment that makes life possible. We have only recently developed the ability to begin unlocking their secrets, thus providing a deeper insight into how a universe of our type is possible. It seems that because of dark matter, dark energy and dark (weak) gravity, our universe has the right attributes for the development of complex structure and the evolution of intelligent life that can engage in the quest to understand our world. These “dark” or more hidden attributes of the cosmos have very good outcomes. In particular, the existence of dark matter makes it easier to form complex structures, including galaxies, stars and planets through gravitational collapse of denser regions of the universe. Planets are the most suitable abodes for the development of life. Dark energy acts to extend the lifetime of the universe by counteracting gravity and driving continued expansion of the universe. Even as far back as the 1930s there has been evidence that most of the matter in the universe was not visible via electromagnetic radiation (optical light, radio waves, etc.). By the last few decades of the 20th century, the case for a considerable amount of this dark matter was very strong. It is the second largest contributor to the total mass-energy of the universe. We don’t know what it is and there are various candidates to explain it; nevertheless we see the gravitational effects of dark matter everywhere on the largest scales. Recent observational results indicate that dark matter dominates by a factor of 6 relative to the ordinary matter that makes up stars, planets, and living things. We now know that the major contributor to the mass-energy of the universe is not the substantial dark matter, but the ‘newer’ so-called dark energy. Dark energy acts to some extent as a negative gravity, and for the last several billion years has driven the expansion of the universe to a faster and faster pace, overcoming even the gravitational effect of dark matter. We have a general idea that it is the irreducible energy found in every volume of space, even in the absence of matter – in the vacuum. We don’t understand why it takes the value that it does, one that is small in quantum particle physics terms, but nevertheless is of great significance on the large cosmological scale of the universe. The third important aspect to consider is not a mass-energy component, but the nature of gravity and space-time. The big question here is – why is gravity so relatively weak, as compared to the other 3 forces of nature? These 3 forces are the electromagnetic force, the strong nuclear force, and the weak nuclear force. Gravity is different – it has a dark or hidden side. It may very well operate in extra dimensions beyond the normal 4 dimensions of space-time that we can observe. This is what we mean in this book by “dark gravity”.

Product details

  • Format: Kindle Edition
  • File Size: 1285 KB
  • Print Length: 142 pages
  • Sold by: Amazon Australia Services, Inc.
  • Language: English
  • ASIN: B00F1RQZPQ
  • Text-to-Speech: Enabled
  • X-Ray:
  • Word Wise: Enabled
  • Enhanced Typesetting: Enabled
  • Average Customer Review: Be the first to review this item
  • Amazon Bestsellers Rank: #823,908 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
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Amazon.com: 3.3 out of 5 stars 6 reviews
1 of 1 people found the following review helpful
1.0 out of 5 stars Self Published Book with Internet Citations 20 January 2017
By Sparrow - Published on Amazon.com
Verified Purchase
Absolutely can NOT recommend this title. Quite obviously a self-published book with the vast majority of citations from the Internet. A RIP OFF from a scholarly point oif view. If this author is so learned why won't a reputable publisher publiush this book? Try the 4% Universe instead. Feel cheated at this ridiculous price. MAYBE worth $5 if you don't mind Internet citations. Made it unusable for me.
4.0 out of 5 stars The title sums it up 8 May 2016
By Don Sherman - Published on Amazon.com
Format: Kindle Edition Verified Purchase
The author pulls together the latest thoughts about Dark stuff and makes it all sound like there are some answers. Time and more experimental data will fill in a few blanks and expose many more. I only can hope that we don't destroy ourselves out of ignorance before we find the real Grand Unifying Theory.
1 of 1 people found the following review helpful
2.0 out of 5 stars Rehash of Other Cosmologies 21 April 2016
By Metaprof - Published on Amazon.com
Format: Kindle Edition Verified Purchase
Not a very informative book if you're used to reading Lisa Randall and Brian Greene. The book did not supply any new information nor insights.
2 of 3 people found the following review helpful
4.0 out of 5 stars Great overview 5 March 2015
By Patty Hayes - Published on Amazon.com
Format: Kindle Edition Verified Purchase
I really enjoyed how each chapter built upon each concept. Basic quantum physics is still new to me and it is easy to get confused with new terms and equations. But, I would recommend this to those newly interested in the subject
5 of 5 people found the following review helpful
5.0 out of 5 stars Well written by a physicist currently involved in this type of reseach! 17 May 2014
By Mark Abrams - Published on Amazon.com
Format: Kindle Edition
This was one of the better books I have read on the subject that is really more for the devoted science geek and, since I am one of those type of people, it held my interest from beginning to end. Much of the subject matter, however, is as yet unproven experimentally, but the ideas are based on more than just fancy.

I would highly recommend this book to people who have a background in science and a strong desire to learn about the interesting theories and thoughts on this new branch of research.