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Dark Matter, Dark Energy, Dark Gravity: Enabling a Universe that Supports Intelligent Life Paperback – April 17, 2013

3.5 3.5 out of 5 stars 27 ratings
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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”.
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  1. Print length
    142 pages
  2. Language
    English
  3. Publication date
    April 17, 2013
  4. Dimensions
    6 x 0.34 x 9 inches
  5. ISBN-10
    1481284088
  6. ISBN-13
    978-1481284080
  7. See all details
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Editorial Reviews

About the Author

Stephen Perrenod holds Ph.D. and Master's degrees in Astronomy from Harvard University and a Bachelor's in Physics from M.I.T. His primary research focus was on the cosmological evolution of X-ray emitting clusters of galaxies. After several years as a postdoctoral researcher in astrophysics he moved into the High Performance Computing field, where he has worked for over a quarter century. He has been a frequent public speaker on HPC, Grid and Cloud computing topics. When he was active in astrophysics in the 1970s, the cosmological constant - which now is of such great significance - was usually dismissed as unlikely to have a non-zero value.

Product details

  • Publisher ‏ : ‎ CreateSpace Independent Publishing Platform; 2nd edition (April 17, 2013)
  • Language ‏ : ‎ English
  • Paperback ‏ : ‎ 142 pages
  • ISBN-10 ‏ : ‎ 1481284088
  • ISBN-13 ‏ : ‎ 978-1481284080
  • Item Weight ‏ : ‎ 7.1 ounces
  • Dimensions ‏ : ‎ 6 x 0.34 x 9 inches
  • Customer Reviews:
    3.5 3.5 out of 5 stars 27 ratings

About the author

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Stephen Perrenod

Stephen Perrenod

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Dr. Stephen Perrenod is the author of the cosmology e-books Dark Matter, Dark Energy, Dark Gravity and 72 Beautiful Galaxies and of the darkmatterdarkenergy.com blog. He has been involved in high performance computing and scientific computing for over 25 years, holding senior sales, marketing and technical positions at Cray, SGI, Sun and elsewhere. Currently he is a partner at OrionX.net, consulting to high-tech startups and larger companies, especially in the areas of Deep Learning, Cloud and Big Data. Prior to his career in HPC he worked as a theoretical and observational astronomer at Kitt Peak National Observatory and the University of Illinois. He has been a frequent public speaker on HPC, Grid and Cloud computing topics, is the author of over 20 scientific research papers, and holds a B.S. degree in Physics from M.I.T. and Masters and Ph.D. degrees in Astronomy (Astrophysics) from Harvard University.

Customer reviews

3.5 out of 5 stars
3.5 out of 5
27 global ratings

Top reviews from the United States

Don Sherman
4.0 out of 5 stars The title sums it up
Reviewed in the United States on May 8, 2016
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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.
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Patty Hayes
4.0 out of 5 stars Great overview
Reviewed in the United States on March 5, 2015
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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
3 people found this helpful
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Sparrow
1.0 out of 5 stars Self Published Book with Internet Citations
Reviewed in the United States on January 19, 2017
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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.
3 people found this helpful
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Metaprof
2.0 out of 5 stars Rehash of Other Cosmologies
Reviewed in the United States on April 20, 2016
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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 people found this helpful
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Mark Abrams
5.0 out of 5 stars Well written by a physicist currently involved in this type of reseach!
Reviewed in the United States on May 16, 2014
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.
6 people found this helpful
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Phil H
5.0 out of 5 stars Its a great overall coverage of the history of cosmology.
Reviewed in the United States on May 16, 2014
Really good explanations of the issues and different avenues of investigation. Doesn't include the later Higgs boson and gravitational wave discoveries but nonetheless talks about the search for the former and mentions the tiny variations in CMB. Also talks about the possible outcomes for where the universe is heading.
5 people found this helpful
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Akademe Foundation
1.0 out of 5 stars Gold mining for suckers
Reviewed in the United States on June 20, 2018
This would be a fun book for a kid with all its hypotheses and history. As a retired educator, I appreciate the inspiration books like this give. I don't appreciate the distractions from reality, the lack of critical thinking, or the effects of hypothesis on the community at large. I've seen his other work, which is just as half baked and void of substance as this large print waste of paper. $30 for a vanity print with less than 150 pages and no color diagrams? This is a gold mining expedition. Go to a university and get a real book on physics instead.
One person found this helpful
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Top reviews from other countries

Daniel Carr
4.0 out of 5 stars Good science...
Reviewed in the United Kingdom on March 15, 2023
Verified Purchase
Although oddly difficult to get into, it was a very thorough look at dark matter, dark energy, and something I did not even know existed until earlier last week... Dark gravity.

I did enjoy the plethora of information but I feel it could have had more shorter chapters... Although this might be a consequence of my generation more than anything else.
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Doom3
5.0 out of 5 stars Five Stars
Reviewed in India on August 27, 2015
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Well written
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