Dark Matter And Dark Energy Quantum Mechanics And General Relativity

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DARK MATTER AND DARK ENERGY, QUANTUM MECHANICS AND GENERAL RELATIVITY, …

Author : John Spacey
Publisher : John Spacey
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.7/5 (498 download)

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Book Synopsis DARK MATTER AND DARK ENERGY, QUANTUM MECHANICS AND GENERAL RELATIVITY, … by : John Spacey

Download or read book DARK MATTER AND DARK ENERGY, QUANTUM MECHANICS AND GENERAL RELATIVITY, … written by John Spacey and published by John Spacey. This book was released on 2021-05-06 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book should be read like a scientific fiction: indeed, I am an engineer and I am not a physicist and not an astrophysicist. The Theory that I have developed in this book is linked to the time at the level of a high speed moving object. In my equation on the time t at the level of the moving object of mass m, there is also the external gravity MG to m which is defined as an important parameter.And so, all the physics areas where time or gravity is a parameter and when there is a moving object could be interested by my Theory.My equation on the time t at the level of the moving object of mass m allowed me to successfully quantify the effect of gravity in the sense that I can calculate the effect of an external gravity on the internal time t of a moving object (like a spacecraft for example). I found a relationship between t, v, m and MG.I have developed all these points in detail in this book.I have analyzed the two concepts of dark Matter and dark Energy and I have explained the links with my Theory.I have also explained how my Theory could help to bring together the two Theories of theoretical physics which are the Theory of General Relativity and the Theory of Quantum Mechanics.I will show also that long travels into the Space are possible according to my Theory, in the sense that the people who traveled inside the spacecraft could return to our Earth after the very long travel, without having aged, like the people who remained on our Earth. And so, travelers could return to our Earth and find people as they were when they left them!And I will describe the concepts of theoretical speeds, according to my Theory.I have found also 2 other areas where time and gravity are involved and so where there is a link with my Theory: The first one is gravitational waves and the second one is the power of spacecraft engines. And I will explain what could be the links with my Theory.I will also explain how the current physics is respected.

Dark Matter and Dark Energy, Quantum Mechanics and General Relativity, ...

Author : John Spacey
Publisher :
ISBN 13 :
Total Pages : 504 pages
Book Rating : 4.5/5 (9 download)

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Book Synopsis Dark Matter and Dark Energy, Quantum Mechanics and General Relativity, ... by : John Spacey

Download or read book Dark Matter and Dark Energy, Quantum Mechanics and General Relativity, ... written by John Spacey and published by . This book was released on 2021-05-08 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book should be read like a scientific fiction: indeed, I am an engineer and I am not a physicist and not an astrophysicist. The Theory that I have developed in this book is linked to the time at the level of a high speed moving object. In my equation on the time t at the level of the moving object of mass m, there is also the external gravity MG to m which is defined as an important parameter.And so, all the physics areas where time or gravity is a parameter and when there is a moving object could be interested by my Theory.My equation on the time t at the level of the moving object of mass m allowed me to successfully quantify the effect of gravity in the sense that I can calculate the effect of an external gravity on the internal time t of a moving object (like a spacecraft for example). I found a relationship between t, v, m and MG.I have developed all these points in detail in this book.I have analyzed the two concepts of dark Matter and dark Energy and I have explained the links with my Theory.I have also explained how my Theory could help to bring together the two Theories of theoretical physics which are the Theory of General Relativity and the Theory of Quantum Mechanics.I will show also that long travels into the Space are possible according to my Theory, in the sense that the people who traveled inside the spacecraft could return to our Earth after the very long travel, without having aged, like the people who remained on our Earth. And so, travelers could return to our Earth and find people as they were when they left them!And I will describe the concepts of theoretical speeds, according to my Theory.I have found also 2 other areas where time and gravity are involved and so where there is a link with my Theory:The first one is gravitational waves and the second one is the power of spacecraft engines. And I will explain what could be the links with my Theory.I will also explain how the current physics is respected.

Dark Matter and Dark Energy

Author : John Spacey
Publisher : John Spacey
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.5/5 (672 download)

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Book Synopsis Dark Matter and Dark Energy by : John Spacey

Download or read book Dark Matter and Dark Energy written by John Spacey and published by John Spacey. This book was released on 2020-11-18 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book should be read like a scientific fiction: indeed, I am an engineer and I am not a physicist and not an astrophysicist. In my 3rd book, "QUANTUM MECHANICS AND GENERAL RELATIVITY", I have explained how the time seems to be the link to bring together the two Theories of theoretical physics which are the Theory of General Relativity and the Theory of Quantum Mechanics. Physicists today believe that in order to achieve a complete unification of the two Theories we must understand and explain in a scientific way what the concepts of dark Matter and dark Energy are. In this book (my 4th), I must therefore analyze these two concepts since I began to want to bring together the two previous Theories. The concepts of dark Matter and dark Energy are related to my equation on the time t inside a moving mass m, located in the gravity field (therefore close) of an external mass MG. I have changed the time t at the level of the mass m by the following time t, and I will explain why these changes: t becomes: t . ( 1/§^2 ) . ( 1 – MG^2 / (m .§ )^2 ) . (1 – Rs^2 / d^2) . And I will also explain in this book the consequences of this modification.

Dark Matter and Dark Energy

Author : Sabino Matarrese
Publisher : Springer Science & Business Media
ISBN 13 : 9048186854
Total Pages : 413 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Dark Matter and Dark Energy by : Sabino Matarrese

Download or read book Dark Matter and Dark Energy written by Sabino Matarrese and published by Springer Science & Business Media. This book was released on 2011-02-10 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Physics of the Universe

Author : Mendel Sachs
Publisher : World Scientific
ISBN 13 : 1848166044
Total Pages : 147 pages
Book Rating : 4.8/5 (481 download)

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Book Synopsis Physics of the Universe by : Mendel Sachs

Download or read book Physics of the Universe written by Mendel Sachs and published by World Scientific. This book was released on 2010 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a new approach to the subject of cosmology. It fully exploits Einstein?s theory of general relativity. It is found that the most general formal expression of the theory replaces the (10-component) tensor formalism with a (16-component) quaternion formalism. This leads to a unified field theory, where one field incorporates gravitation and electromagnetism. The theory predicts an oscillating universe cosmology with a spiral configuration. Dark matter is explained in terms of a sea of particle?antiparticle pairs, each in a particular (derived) ground state. This leads to an explanation for the separation between matter and antimatter in the universe. There is a brief discussion of black holes and pulsars. The final chapter delves into philosophical considerations such as the different types of ?truth?, positivism versus realism and a discussion of the role of the Mach principle in physics and cosmology.

A Superfluid Universe

Author : Kerson Huang
Publisher : World Scientific
ISBN 13 : 9813148489
Total Pages : 135 pages
Book Rating : 4.8/5 (131 download)

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Book Synopsis A Superfluid Universe by : Kerson Huang

Download or read book A Superfluid Universe written by Kerson Huang and published by World Scientific. This book was released on 2016-08-08 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interesting book provides the physical and mathematical background for a theory describing the universe as a quantum superfluid, and how dark energy and dark matter arise. Presenting a novel theory spanning many different fields in physics, the key concepts in each field are introduced.The reader is only expected to know the rudiments of condensed matter physics, quantum field theory and general relativity to explore this fascinating new model of dark matter and dark energy as facets of a cosmic superfluid.

Beyond the Dynamical Universe

Author : Michael Silberstein
Publisher : Oxford University Press
ISBN 13 : 0192533835
Total Pages : 445 pages
Book Rating : 4.1/5 (925 download)

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Book Synopsis Beyond the Dynamical Universe by : Michael Silberstein

Download or read book Beyond the Dynamical Universe written by Michael Silberstein and published by Oxford University Press. This book was released on 2018-02-02 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical physics and foundations of physics have not made much progress in the last few decades. Whether we are talking about unifying general relativity and quantum field theory (quantum gravity), explaining so-called dark energy and dark matter (cosmology), or the interpretation and implications of quantum mechanics and relativity, there is no consensus in sight. In addition, both enterprises are deeply puzzled about various facets of time including above all, time as experienced. The authors argue that, across the board, this impasse is the result of the "dynamical universe paradigm," the idea that reality is fundamentally made up of physical entities that evolve in time from some initial state according to dynamical laws. Thus, in the dynamical universe, the initial conditions plus the dynamical laws explain everything else going exclusively forward in time. In cosmology, for example, the initial conditions reside in the Big Bang and the dynamical law is supplied by general relativity. Accordingly, the present state of the universe is explained exclusively by its past. This book offers a completely new paradigm (called Relational Blockworld), whereby the past, present and future co-determine each other via "adynamical global constraints," such as the least action principle. Accordingly, the future is just as important for explaining the present as is the past. Most of the book is devoted to showing how Relational Blockworld resolves many of the current conundrums of both theoretical physics and foundations of physics, including the mystery of time as experienced and how that experience relates to the block universe.

The Invisible Universe: Dark Matter and Dark Energy

Author : Eleftherios Papantonopoulos
Publisher : Springer
ISBN 13 : 3540710132
Total Pages : 443 pages
Book Rating : 4.5/5 (47 download)

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Book Synopsis The Invisible Universe: Dark Matter and Dark Energy by : Eleftherios Papantonopoulos

Download or read book The Invisible Universe: Dark Matter and Dark Energy written by Eleftherios Papantonopoulos and published by Springer. This book was released on 2007-08-01 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nature and essence of Dark Matter and Dark Energy have become the central issue in modern cosmology over the past years. This extensive volume, an outgrowth of a topical and tutorial summer school, has been set up with the aim of constituting an advanced-level, multi-authored textbook which meets the needs of both postgraduate students and young researchers in the fields of modern cosmology and astrophysics.

Gravity, Black Holes, and the Very Early Universe

Author : Tai L. Chow
Publisher : Springer Science & Business Media
ISBN 13 : 038773631X
Total Pages : 285 pages
Book Rating : 4.3/5 (877 download)

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Book Synopsis Gravity, Black Holes, and the Very Early Universe by : Tai L. Chow

Download or read book Gravity, Black Holes, and the Very Early Universe written by Tai L. Chow and published by Springer Science & Business Media. This book was released on 2007-10-24 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here it is, in a nutshell: the history of one genius’s most crucial work – discoveries that were to change the face of modern physics. In the early 1900s, Albert Einstein formulated two theories that would forever change the landscape of physics: the Special Theory of Relativity and the General Theory of Relativity. Respected American academic Professor Tai Chow tells us the story of these discoveries. He details the basic ideas of Einstein, including his law of gravitation. Deftly employing his inimitable writing style, he goes on to explain the physics behind black holes, weaving into his account an explanation of the structure of the universe and the science of cosmology.

Reality vs Quantum Mysticism

Author : R. Curtis Arthur
Publisher : FriesenPress
ISBN 13 : 1525574345
Total Pages : 135 pages
Book Rating : 4.5/5 (255 download)

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Book Synopsis Reality vs Quantum Mysticism by : R. Curtis Arthur

Download or read book Reality vs Quantum Mysticism written by R. Curtis Arthur and published by FriesenPress. This book was released on 2021-05-26 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science has made tremendous advances in overcoming superstition and replacing “revealed truth” with proven factual truth. Quantum mechanics and the Theories of Relativity have contributed immensely to these advances. But, in spite of this, certain absurdities, referred to as the “quantum enigma”, have emerged from the standard interpretation of quantum mechanics. This has been recognized by some physicists, but the absurdities have been largely ignored by most to the detriment of our understanding of the creation, evolution and nature of the universe. Albert Einstein himself felt quantum mechanics was incomplete and spent the last 3 or 4 decades of his life fighting the proponents of the absurdities. It has been claimed that Einstein lost this battle, but the author disagrees and provides proof of the opposite. Einstein may have made slight mistakes in developing his Theories of Relativity, however, that may have unintentionally contributed to the absurdities and the author’s work supports the statement that "Einstein may have been wrong just where most thought he was right and right just where most thought he was wrong." The author provides a new analysis of space and time and corrections to aspects of quantum mechanics and the Theories of Relativity that may eliminate the absurdities. This could provide a new understanding of the birth, evolution and nature of the universe and possible explanations for dark energy and dark matter. This is presented in a manner that can be understood and appreciated by all curious folks, not just physicists, and will help them understand their universe and the amazing things physicists have accomplished.

The Galaxy

Author : Steff Jaywan
Publisher : Dedona Publishing
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4./5 ( download)

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Book Synopsis The Galaxy by : Steff Jaywan

Download or read book The Galaxy written by Steff Jaywan and published by Dedona Publishing. This book was released on with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book consists of 3 titles, which are the following: Dark Matter - In the vast expanse of the cosmos, there exists an enigmatic substance that eludes detection yet exerts a profound influence on the universe's structure and evolution. This substance, known as dark matter, remains one of the greatest mysteries of modern astrophysics, captivating the imaginations of scientists and enthusiasts alike. Galaxies - Galaxies are dynamic entities, constantly evolving through processes like mergers, collisions, and interactions with neighboring galaxies. When galaxies merge, their stars, gas, and dust can undergo dramatic transformations, leading to the formation of new stars and restructuring of the galaxy's shape. These interactions can trigger intense bursts of star formation and feed supermassive black holes at the galaxies' centers, leading to the emission of powerful jets of radiation. Quantum Gravity - General relativity, developed by Albert Einstein, describes gravity as the curvature of spacetime caused by mass and energy. It works extremely well at large scales, such as in predicting planetary orbits and the behavior of black holes. On the other hand, quantum mechanics deals with the fundamental behavior of particles at the smallest scales, such as atoms and subatomic particles. It incorporates principles like wave-particle duality, quantization, and uncertainty.

Introduction to Particle Cosmology

Author : Cosimo Bambi
Publisher : Springer
ISBN 13 : 3662480786
Total Pages : 251 pages
Book Rating : 4.6/5 (624 download)

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Book Synopsis Introduction to Particle Cosmology by : Cosimo Bambi

Download or read book Introduction to Particle Cosmology written by Cosimo Bambi and published by Springer. This book was released on 2015-08-14 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the basic concepts of particle cosmology and covers all the main aspects of the Big Bang Model (expansion of the Universe, Big Bang Nucleosynthesis, Cosmic Microwave Background, large scale structures) and the search for new physics (inflation, baryogenesis, dark matter, dark energy). It also includes the majority of recent discoveries, such as the precise determination of cosmological parameters using experiments like WMAP and Planck, the discovery of the Higgs boson at LHC, the non-discovery to date of supersymmetric particles, and the search for the imprint of gravitational waves on the CMB polarization by Planck and BICEP. This textbook is based on the authors’ courses on Cosmology, and aims at introducing Particle Cosmology to senior undergraduate and graduate students. It has been especially written to be accessible even for those students who do not have a strong background in General Relativity and quantum field theory. The content of this book is organized in an easy-to-use style and students will find it a helpful research guide.

New Physics

Author : Claus Birkholz
Publisher : BookRix
ISBN 13 : 3730963538
Total Pages : 124 pages
Book Rating : 4.7/5 (39 download)

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Book Synopsis New Physics by : Claus Birkholz

Download or read book New Physics written by Claus Birkholz and published by BookRix. This book was released on 2013-12-31 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The "Standard Models" out of date and inconsistent, and string/brane models still "beyond" them - long since they reached their ends. A New Physics must come. Marrying Planck's quantum theory with Einstein's General Relativity, the author is presenting a consistent Quantum Gravity. Its extension to a "Grand Unification" of all forces of nature emerges as a quantum field theory in a fully quantized, "background-independent", bent space-time. Dark Energy, Dark Matter, hadron and lepton flavours, the details of Einstein's cosmological constant, and much more is dropping out by the way. The quark confinement, the physics before the Big Bang, and a lot of old problems of fundamental physics are dissolving to nothing, explaining themselves as self-evident properties of nature. Future starts to-day. Come along on the journey! Main target groups: Students, physicists, mathematicians, but also people interested in philosophy or with an inclination to leave the beaten dead-end tracks of actual fundamental theories of the old style in favour of more promising, novel ways out.

Physics, Martinus Cosmology and the Theory of Everything

Author : Leif Pettersson
Publisher : BalboaPress
ISBN 13 : 1452548218
Total Pages : 140 pages
Book Rating : 4.4/5 (525 download)

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Book Synopsis Physics, Martinus Cosmology and the Theory of Everything by : Leif Pettersson

Download or read book Physics, Martinus Cosmology and the Theory of Everything written by Leif Pettersson and published by BalboaPress. This book was released on 2012-03-22 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A completely New Understanding of Reality! Presenting FET, a new model that meets physicists' criteria for what they term The Theory of Everything and provides answers to many unsolved mysteries of physics. FET describes the qualitative vacuum energies, the Fundamental Energies in the zero-point filed underlying and constituting the entire physical world, explaining dark matter, dark energy, particles, mass, Higgs field, gravity, space-time and much more. Leif Pettersson has succeeded in presenting this complex, astounding material in a clear-cut, rational and comprehensive way. The subject is highly topical and of great public interest it connects to the research at CERN and it also matches the presentation of science and popular science in today's media. The book is richly illustrated in color. Physicists have worked intensively for a long time to understand our physical world. They have also been struggling to unify the four forces of nature: gravity, electromagnetism and the strong and weak nuclear forces into a Theory of Everything, but so far without success. In this book Leif Pettersson presents a groundbreaking and very exciting material with theories based on the intuitive knowledge contained in Martinus Cosmology. These theories demonstrate a new model, The Fundamental Energy Theory FET, that without any contradiction unifies the four fundamental forces of nature, and in fact gives us The Theory of Everything! Hypotheses are presented that may explain the mechanisms behind Einsteins General and Special Theories of Relativity, quantum physics with its hypothetical gravitons, Higgs particles etc. and the enigmatic dark matter, dark energy and a lot more. The Fundamental Energy Theory offers a logical, coherent key to many of the unsolved mysteries of physics, e.g. those being currently studied in the worlds biggest research project so far, the particle accelerator in CERN. The book is made available by New Cosmic Paradigm (NCP), an independent organization representing and working with the branch of the intuitive knowledge contained in Martinus Cosmology that is building bridges to Science, focusing on the great issues about Life, Consciousness and Reality posed by humanity and science. This branch is especially represented by Per Bruus-Jensen, former trainee and collaborator with Martinus. Physics, Martinus Cosmolgy and The Theory of Everything The Fundamental Energy Theory FET by Leif Pettersson is an important addition to this field. More information at www.newcosmicparadigm.org Welcome!

Gravitational Theories Beyond General Relativity

Author : Iberê Kuntz
Publisher : Springer
ISBN 13 : 3030211975
Total Pages : 82 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Gravitational Theories Beyond General Relativity by : Iberê Kuntz

Download or read book Gravitational Theories Beyond General Relativity written by Iberê Kuntz and published by Springer. This book was released on 2019-05-21 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the success of general relativity in explaining classical gravitational phenomena, several problems at the interface between gravitation and high energy physics still remain open. The purpose of this thesis is to explore quantum gravity and its phenomenological consequences for dark matter, gravitational waves and inflation. A new formalism to classify gravitational theories based on their degrees of freedom is introduced and, in light of this classification, it is argued that dark matter is no different from modified gravity. Gravitational waves are shown to be damped due to quantum degrees of freedom. The consequences for gravitational wave events are also discussed. The non-minimal coupling of the Higgs boson to gravity is studied in connection with Starobinsky inflation and its implications for the vacuum instability problem is analyzed.

DARK MATTER AND DARK ENERGY, BLACK HOLES, …

Author : John Dark-Physics
Publisher : John Dark-Physics
ISBN 13 :
Total Pages : 317 pages
Book Rating : 4./5 ( download)

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Book Synopsis DARK MATTER AND DARK ENERGY, BLACK HOLES, … by : John Dark-Physics

Download or read book DARK MATTER AND DARK ENERGY, BLACK HOLES, … written by John Dark-Physics and published by John Dark-Physics. This book was released on 2023-08-07 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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?

Invisible Universe, The: Dark Matter, Dark Energy, And The Origin And End Of The Universe

Author : Antonino Del Popolo
Publisher : World Scientific
ISBN 13 : 9811229457
Total Pages : 289 pages
Book Rating : 4.8/5 (112 download)

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Book Synopsis Invisible Universe, The: Dark Matter, Dark Energy, And The Origin And End Of The Universe by : Antonino Del Popolo

Download or read book Invisible Universe, The: Dark Matter, Dark Energy, And The Origin And End Of The Universe written by Antonino Del Popolo and published by World Scientific. This book was released on 2021-04-20 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes some of the frontier problems of cosmology: our almost total ignorance of what the Universe is made up of, the mystery of its origin and its end. The book starts with a description of the historical events that led to the construction of the Big Bang model together with the stages that transformed the Universe from a very hot place to a very cold one, full with the structures that we observe today. These structures (stars, galaxies, etc.) constitute only 5% of the contents of the Universe. Concerning the remaining 95%, dubbed dark matter and dark energy, we know very little, and we have only indirect evidence of their existence. The text describes the story and the protagonists who showed the need for the existence of this 'missing matter', the observations, and puzzles they had to solve to understand that dark matter was not ordinary matter. The book describes the hunt for dark matter, carried out with instruments operating in space, on the Earth's surface, and in laboratories built in the bowels of the Earth. It also describes dark energy, which manifests itself in the accelerated expansion of the Universe, and appeared only a few billions of years ago. The book discusses why dark energy must exist and what its existence implies, especially for the future and the end of our Universe.