Space Gravity And Dark Energy
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Dark Energy Dark Matter And Anti Gravity
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Author : Balungi Francis
language : en
Publisher: Blurb
Release Date : 2024-02-05
Dark Energy Dark Matter And Anti Gravity written by Balungi Francis and has been published by Blurb this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-05 with Education categories.
The universe is full of matter and the attractive force of gravity pulls all matter together. The expansion of the universe has not been slowing due to gravity, as everyone thought, it has been accelerating. Maybe it was a result of a long-discarded version of Einstein's theory of gravity, one that contained what was called a "cosmological constant." Maybe there was some strange kind of energy-fluid that filled space. Maybe there is something wrong with Einstein's theory of gravity and a new theory could include some kind of field that creates this cosmic acceleration. It turns out that roughly 68percent of the universe is dark energy. Dark matter makes up about 27percent. The rest - everything on Earth, everything ever observed with all of our instruments, all normal matter - adds up to less than 5percent of the universe. Come to think of it, maybe it shouldn't be called "normal" matter at all, since it is such a small fraction of the universe. Balungi Francis explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.
Interacting Dark Energy And The Expansion Of The Universe
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Author : Alexander S. Silbergleit
language : en
Publisher: Springer
Release Date : 2017-04-22
Interacting Dark Energy And The Expansion Of The Universe written by Alexander S. Silbergleit and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-22 with Science categories.
This book presents a high-level study of cosmology with interacting dark energy and no additional fields. It is known that dark energy is not necessarily uniform when other sources of gravity are present: interaction with matter leads to its variation in space and time. The present text studies the cosmological implications of this circumstance by analyzing cosmological models in which the dark energy density interacts with matter and thus changes with the time. The book also includes a translation of a seminal article about the remarkable life and work of E.B. Gliner, the first person to suggest the concept of dark energy in 1965.
Matter Gravity And Dark Energy
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Author : Nicholas Summers
language : en
Publisher: Nicholas Summers
Release Date :
Matter Gravity And Dark Energy written by Nicholas Summers and has been published by Nicholas Summers this book supported file pdf, txt, epub, kindle and other format this book has been release on with Science categories.
A thought provoking read for those with an interest in what causes gravity and matter's close relationship with dark energy. The book is written for the layman. There are no mathematics but some prior knowledge of physical principles will help provide a clearer understanding. It is more of a philosophical approach to some of science's unanswered questions.
Reconciling Dark Matter Dark Energy And Two High Tides
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Author : Don Robertson
language : en
Publisher: Don Robertson
Release Date : 2017-12-24
Reconciling Dark Matter Dark Energy And Two High Tides written by Don Robertson and has been published by Don Robertson this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-24 with Science categories.
This is an eight-paged paper that explores our understanding of gravity, black holes, dark energy, dark matter, event horizons, gravity waves, the speed of light, the speed of gravity, grand unifying theories, and the possibility of time waves; each from the perspective of grid systems. There isn't a single equation. This is pure metaphysics, intended to raise questions, and challenge assumptions. To encourage discussion, the paper closes with a new explanation for why there are two high tides, and provides a prediction about how gravity works to cause two high tides. [email protected]
Dark Matter Dark Energy Dark Gravity
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Author : Stephen Perrenod
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2013-04-17
Dark Matter Dark Energy Dark Gravity written by Stephen Perrenod and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-17 with Dark energy (Astronomy) categories.
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".
Dark Matter And Dark Energy Black Holes
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Author : John Dark-Physics
language : en
Publisher: John Dark-Physics
Release Date : 2023-08-07
Dark Matter And Dark Energy Black Holes written by John Dark-Physics and has been published by John Dark-Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-07 with Fiction categories.
Through a short story I will provide answers to some questions that many of us are asking about our Universe. And in particular, I will explain where would be the missing mass of the Universe (the Dark Matter) and what would be the Dark Energy and the Dark Matter. I will also discuss what happens inside a black-hole when a planet is sucked in: I have broken down the global movement into two separate movements... I have analyzed the consequences of my analysis on black-holes for our Universe and the conclusions are very interesting! My analysis allowed me to address the following points: the Energy Density of the Vacuum of the space, the Cosmological Constant, the Hubble Constant, the expansion of our Universe and the acceleration of this expansion, the compatibility links between my Theory and the current physics, … I have also shown the extraordinary power of the Gravity! And I have also shown that far-away travels into the space would be possible, in agreement with my Theory, by reducing the number of obstacles! Finally, I have mentioned the new questions that arise when some answers are found... and in particular what technology to make a spacecraft that could go at a speed close to the speed of light?
Flat Space Cosmology
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Author : Eugene Terry Tatum
language : en
Publisher: Universal-Publishers
Release Date : 2021-06-15
Flat Space Cosmology written by Eugene Terry Tatum and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-15 with Science categories.
This compilation based upon recent peer-reviewed journal publications encapsulates how the Flat Space Cosmology model (FSC) has become the primary competitor to the inflationary standard model of cosmology. New ideas concerning black holes, dark energy and dark matter are presented and shown to correlate extremely well with astronomical observations. Anyone who follows the fast-changing science of cosmology, has an interest in the latest developments, and would like to know how it is that our universe appears to follow equations one would ordinarily expect for a time-reversed black hole (!), may find this book to be fascinating. Cosmology is the study of how the universe has changed over the great span of time (roughly 14 billion years). Later centuries will look back upon the period from 1990-2030 as a ‘Golden Age’ of theoretical and observational cosmology. It is highly likely that we are on the verge of a deeper understanding of the most mysterious energy (‘dark energy’) and matter (‘dark matter’) comprising the majority of energy and matter in the universe. Some of the material presented in this book is on the cutting edge of dark energy and dark matter theoretical work. This book summarizes, for the first time, the groundbreaking publications of two cosmologists, one from the United States and the other from India, from 2015 thru 2020. During this highly productive period, the authors stealthily published their papers in six different peer-reviewed scientific journals, so that the model could be quietly explored in all aspects before bringing it all together in a single book. This is that book!
Dark Matter And Dark Energy
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Author : Sabino Matarrese
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-02-10
Dark Matter And Dark Energy written by Sabino Matarrese and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-02-10 with Science categories.
This book brings together reviews from leading international authorities on the developments in the study of dark matter and dark energy, as seen from both their cosmological and particle physics side. Studying the physical and astrophysical properties of the dark components of our Universe is a crucial step towards the ultimate goal of unveiling their nature. The work developed from a doctoral school sponsored by the Italian Society of General Relativity and Gravitation. The book starts with a concise introduction to the standard cosmological model, as well as with a presentation of the theory of linear perturbations around a homogeneous and isotropic background. It covers the particle physics and cosmological aspects of dark matter and (dynamical) dark energy, including a discussion of how modified theories of gravity could provide a possible candidate for dark energy. A detailed presentation is also given of the possible ways of testing the theory in terms of cosmic microwave background, galaxy redshift surveys and weak gravitational lensing observations. Included is a chapter reviewing extensively the direct and indirect methods of detection of the hypothetical dark matter particles. Also included is a self-contained introduction to the techniques and most important results of numerical (e.g. N-body) simulations in cosmology. " This volume will be useful to researchers, PhD and graduate students in Astrophysics, Cosmology Physics and Mathematics, who are interested in cosmology, dark matter and dark energy.
The Dark Universe
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Author : Mario Livio
language : en
Publisher: Cambridge University Press
Release Date : 2004-02-26
The Dark Universe written by Mario Livio and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-02-26 with Science categories.
This volume presents especially written articles by a host of world experts working on all aspects of dark matter and theories of gravity. This is an indispensable collection of review articles for researchers and graduate students.
Dark Matter And Dark Energy
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Author : Brian Clegg
language : en
Publisher: Icon Books
Release Date : 2019-08-08
Dark Matter And Dark Energy written by Brian Clegg and has been published by Icon Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-08 with Science categories.
'Clear and compact ... It's hard to fault as a brief, easily digestible introduction to some of the biggest questions in the Universe' Giles Sparrow, BBC Four's The Sky at Night , Best astronomy and space books of 2019: 5/5 All the matter and light we can see in the universe makes up a trivial 5 per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced. Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. That 'something' is dark matter - invisible material in five times the quantity of the familiar stuff of stars and planets. By the 1990s we also knew that the expansion of the universe was accelerating. Something, named dark energy, is pushing it to expand faster and faster. Across the universe, this requires enough energy that the equivalent mass would be nearly fourteen times greater than all the visible material in existence. Brian Clegg explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.