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Einstein's Telescope: The Hunt for Dark Matter and Dark Energy in the Universe 1st Edition
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From Publishers Weekly
Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved.
(Marcia Bartusiak -Washington Post )
In this highly informative book, Gates offers clear, accessible explanations of how gravitational lensing can…solve the [universe's] biggest mysteries.
(Amanda Gefter -New Scientist )
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Top Customer Reviews
Wrong. Observations in 1970 revealed that gravitational motions of gas clouds in the Andromeda galaxy were occurring at speeds far greater than the entire observed mass of that galaxy could account for. Similar problems detected in the 1930's involving motions of entire galaxies had long been disregarded. Soon other observations confirmed that so-called "ordinary matter" is insufficient to account for observed gravitational effects in the cosmos. Thus the universe must contain huge amounts of "dark matter," that we cannot observe and the composition of which we do not know (it is not made of the particles that constitute ordinary matter).
Then in 1998 reports of observations of distant supernovae revealed that the expansion of the universe was not slowing, as would be expected from long-term effects of gravity, but was instead accelerating. Something was overcoming the gravitational power of all of the matter in the universe. The acceleration, moreover, has not been present from the Big Bang on. For billions of years the speed of expansion slowed.Read more ›
Gates introduces a brief history of how scientists came to understand that dark matter and dark energy had to be part of our Universe in order to explain a few basic observations. Once she has offered the reader a framework for why we need to look more deeply at the way our Universe appears, Gates explains just what causes the "Einstein's Telescope" effect. This fascinating technique involves gravitational lensing of distant objects by massive objects sitting closer to the Earth. Often, the lenses are clusters of galaxies, and through the process of lensing more distant galaxies, we can learn how much mass is acting on the light of the distant sources, giving us insight into where dark matter may reside and exactly how it interacts with ordinary mass.
The book explains various theories of dark matter, primarily MACHOs and WIMPs, offers glimpses at the even more mysterious dark energy, for which there are no shortage of wild theories, and eventually goes deep into the cosmic web that may hold clues to the earliest formation of galaxies.
Later parts of the book, which may well be the strongest in what is a very solid presentation, describe the multiple experiments ongoing and various theories currently being formulated.Read more ›
"What we have learned [about our Universe] is amazing. The Universe is 13.7 billion years old, it has a temperature of just under 3 degrees above absolute zero, and its spatial geometry is flat. The enormous expanse of space that we can see today, filled with hundreds of billions of galaxies, began as an intensely hot, almost infinitely dense soup of energy that has expanded and cooled since the beginning of time and space. Space itself is expanding in a great cosmic stretch that has recently begun to kick up a notch--the Universe is accelerating. And it is dark. The cosmic inventory is dominated by dark energy (72%) and dark matter (23%) [both of which we can't see]; normal matter, which comprises everything we [can see and] have ever been able to hold in our hands or examine with our instruments, comes in a distant third, contributing only about 5% of everything that is."
The above comes from the epilogue of this well-written, very informative book by Dr. Evalyn Gates, Assistant Director of the Kavli Institute for Cosmological Physics and a Senior Research Associate at the University of Chicago.
So what is this book about? As might be deduced from the above quotation, it's about the dark side of the Universe--dark matter, dark energy, even black holes.
Dark matter is the hypothetical matter that holds the galaxies together. WIMPs (Weakly Interacting Massive Particle), mentioned in this review's title, are one of the leading candidates for a type of dark matter. Dark energy is the hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the Universe.Read more ›
Most Recent Customer Reviews
Well written for the non-mathematician; enjoyable reading. A handful of typos. As with most electronic Kindle books, the publication date is missing, which confuses scientific... Read morePublished 2 months ago by Bill Reid &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp; The Fewer Sorrows Band
Good but not great.
I was disappointed that in too many places, Too often, Gates does not communicate very well what is going on. Read more
Contains a description of Micro-lensing. Gravitational lensing has confirmed that dark matter is real matter, of some sort, and dominates all matter. Read morePublished 11 months ago by Roger Doger
Theoretical physics and cosmology are daunting fields that frequently test common intuitions. As a layman, I approach the topic humbly and with a thirst for visual graphics and... Read morePublished 23 months ago by Bradley Messenger
the book was an excellent source of information for the current techniques being used to further explore the reasons why the universe is expanding. Read morePublished 23 months ago by J. husted
Well written with humor and without the clutter of formulas and excess details. I highly recommend for anyone interested in astrophysics.Published on January 29, 2014 by Kindle Customer
I was looking for a book on dark matter that I could understand. After reading several summaries of different books, I took a chance with this one. Read morePublished on January 15, 2014 by Amazon Customer
I am not a scientist, but I enjoy reading about science. I really liked folderol 150's comments (the PhD in String Theory). Read morePublished on August 14, 2013 by Monique B. Chiasson