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Leading scientists offer a collection of essays that furnish illuminating explanations of recent discoveries in modern astrophysics--from the Big Bang to black holes--the possibility of life on other worlds, and the emerging technologies that make such research possible, accompanied by incisive profiles of such key figures as Carl Sagan and Georges Lemaetre. Original.
An accessible look at the mysteries that lurk at the edge of the known universe and beyond The observable universe, the part we can see with telescopes, is incredibly vast. Yet recent theories suggest that there is far more to the universe than what our instruments record—in fact, it could be infinite. Colossal flows of galaxies, large empty regions called voids, and other unexplained phenomena offer clues that our own "bubble universe" could be part of a greater realm called the multiverse. How big is the observable universe? What it is made of? What lies beyond it? Was there a time before the Big Bang? Could space have unseen dimensions? In this book, physicist and science writer Paul Halpern explains what we know?and what we hope to soon find out?about our extraordinary cosmos. Explains what we know about the Big Bang, the accelerating universe, dark energy, dark flow, and dark matter to examine some of the theories about the content of the universe and why its edge is getting farther away from us faster Explores the idea that the observable universe could be a hologram and that everything that happens within it might be written on its edge Written by physicist and popular science writer Paul Halpern, whose other books include Collider: The Search for the World's Smallest Particles, and What's Science Ever Done For Us: What the Simpsons Can Teach Us About Physics, Robots, Life, and the Universe
"On the Cosmic Horizon reaches wide across the cosmos to provide lucid explanations for many of the most compelling cosmic questions. Following a Top Ten countdown, the book explores with wit and clarity each mystery and how it may be resolved. Each enigma is made accessible through a story which draws upon history and everyday human experience. Along the way, we learn about our state-of-the-art understanding of the universe, future missions, and the potential impact of unravelling these cosmic conundrums. On the Cosmic Horizon is the perfect book for anyone who wants to understand astronomical headlines and why they are important."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved
Inflationary cosmology has been developed over the last twenty years to remedy serious shortcomings in the standard hot big bang model of the universe. This textbook, first published in 2005, explains the basis of modern cosmology and shows where the theoretical results come from. The book is divided into two parts; the first deals with the homogeneous and isotropic model of the Universe, the second part discusses how inhomogeneities can explain its structure. Established material such as the inflation and quantum cosmological perturbation are presented in great detail, however the reader is brought to the frontiers of current cosmological research by the discussion of more speculative ideas. An ideal textbook for both advanced students of physics and astrophysics, all of the necessary background material is included in every chapter and no prior knowledge of general relativity and quantum field theory is assumed.
A substantial update of this award-winning and highly regarded cosmology textbook, for advanced undergraduates in physics and astronomy.
Frederik Pohl was on a streak when this Hugo Award–finalist novel was published in 1980. Now back in print after an absence of nearly a decade, this unique science fiction novel is as fresh and entertaining as ever. The story begins when the hero of Gateway finances an expedition to a distant alien spaceship that may end famine forever. On the ship, the explorers find a human boy, and evidence that reveals a powerful alien civilization is thriving on a transport ship headed right for Earth.... At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Mack looks at five ways the universe could end, and the lessons each scenario reveals about the most important concepts in cosmology. --From publisher description.
Crossing the Event Horizon provides evidence that we are, both individually and collectively, hurtling toward an evolutionary event horizon. Using the tools of Jungian psychology, the nature of the singularity is defined by its myriad manifestations emerging from the collective unconscious. These include dreams, motifs and themes found in art, science fiction and fantasy literature and films, religious cults, and the paranormal, especially near-death experiences and UFO encounters. Key aspects of the Singularity Archetype include: "Logos Beheld" (visually comprehended linguistic intent often associated with a collective telepathic network), Homo gestalt (a new species where individuality is conserved but also telepathically networked), and a parallelism between the individual event horizon of death and eschaton (the collective event horizon of the species). Apocalypticism is analyzed as an example of the Singularity Archetype pathologizing. A study of the Heaven's Gate saucer/suicide cult illustrates what can happen when people become possessed by the Singularity Archetype and are driven by it into delusory projections. The Singularity Archetype is viewed apocalyptically by the ego, and as a transcendent evolutionary event by the Self, and the duality of these views is explored in many examples. The evolutionary origins of the ego and its metamorphosis as it approaches the event horizon are explored. Evolutionary theory, which relates to the Singularity Archetype through a number of dynamic paradoxes, is discussed. Many popular books and movies are analyzed as permutations of the Singularity Archetype, including: Avatar, Childhood's End, Village of the Damned, Powder, and 2001: A Space Odyssey.The Singularity Archetype is a primordial image of human evolutionary metamorphosis which emerges from the collective unconscious. How the Archetype Manifests (a Composite Picture)A rupture-of-plane event occurs, usually threatening the survival of the individual and/or species.The event is a shock that disrupts the equilibrium of body/physical world and also individual/collective psyche. It is an ontological shock that will be viewed as the worst thing possible by individual/ collective ego. There is another rupture of plane that may actually be the same rupture as above but seen from a cosmic rather than a personal view. The shock is revealed to be a transcendent evolutionary event. The revelation of the transcendent aspect will often involve spiral motifs and unusual lights. Consciousness and communication metamorphose and with them core aspects---ego, individuality, connection to linear time, corporeality, gender identification, social order, etc.---fundamentally transform. There is a vision or actualization of release from some or all limits of corporeal incarnation and the emergence of "glorified bodies," which have enhanced powers and various degrees of etherialization. More visual and telepathic modes of consciousness and communication emerge, and this is part of a transformation of individuality into "Homo gestalt"---a new species where individual psyches are networked telepathically. The Singularity Archetype may be experienced and even actualized to various degrees by an individual through transcendent and/or anomalous experiences such as near-death experiences (NDEs), UFO/abduction/close encounter experiences, kundalini and psychotropic episodes.As with encounters with all archetypes, individuals and groups attach idiosyncratic material to it, such as particular end dates and scenarios. Another way of defining the Singularity Archetype (in its collective form) is as a resonance, flowing backward through time, of an approaching Singularity at the end of human history. The Singularity Archetype relates to both the evolutionary event horizon of the species and, for the individual, the event horizon of death.
An advanced text for senior undergraduates, graduate students and physical scientists in fields outside cosmology. This is a self-contained book focusing on the linear theory of the evolution of density perturbations in the universe, and the anisotropiesin the cosmic microwave background.
The growth of cosmology into a precision science represents one of the most remarkable stories of the past century. Much has been written chronicling this development, but rarely has any of it focused on the most critical element of this work–the cosmic spacetime itself. Addressing this lacuna is the principal focus of this book, documenting the growing body of evidence compelling us–not only to use this famous solution to Einstein's equations in order to refine the current paradigm, but–to probe its foundation at a much deeper level. Its excursion from the smallest to largest possible scales insightfully reveals an emerging link between the Universe we behold and the established tenets of our most fundamental physical theories. Key Features: Uncovers the critical link between the Local Flatness Theorem in general relativity and the symmetries informing the spacetime's metric coefficients Develops a physical explanation for some of the most unpalatable coincidences in cosmology Provides a sober assessment of the horizon problems precluding our full understanding of the early Universe Reveals a possible explanation for the origin of rest-mass energy in Einstein's theory In spite of its technical layout, this book does not shy away from introducing the principal players who have made the most enduring contributions to this field. Anyone with a graduate level foundation in physics and astronomy will be able to easily follow its contents.