The universe is pervaded by particles with extreme energies, millions of times greater than we can produce on Earth. They have been a mystery for over a century. Now, current and future experiments in particle astrophysics are leading us to answers to the most fundamental questions about them. How does nature accelerate the highest energy particles in the universe? Do new interactions between them occur at such extreme energies? Are there unknown aspects of spacetime that can be uncovered by studying these particles?This book brings together three fields within 'extreme astronomy': ultra-high-energy cosmic ray physics, neutrino astronomy, and gamma-ray astronomy, and discusses how each can help answer these questions. Each field is presented with a theoretical introduction that clearly elucidates the key questions scientists face. This is followed by chapters that discuss the current set of experiments - how they work and their discoveries. Finally, new techniques and approaches are discussed to solve the mysteries uncovered by the current experiments.

Does science deny God? Did the Universe and life appear by chance or is there evidence of a bigger scheme of thing behind them? In this context, I am concerned with answering these questions. This problem is addressed using knowledge in cosmology, physics and biology. The initial part describes the stages of the 'Genesis' according to physical cosmology from the Big Bang to the appearance of life on Earth. It will touch on problems of why the universe is dominated by matter, the theory of inflation, the limits of our knowledge on the early Universe, the lack of a theory that can allow us to study the phases immediately after the Big Bang, the relation between the concepts of quantum mechanics and the existence of God. It shows how the Universe is finely regulated, that is, the physical constants have been chosen so that life appears in the Universe. The regulation is so strong that we are forced to think the existence of a great designer who has created a particular Universe like the one we are observing. This conclusion can be avoided only if there is an infinity of universes, a multiverse. We ask ourselves if science can create the Universe from nothing and using the same arguments of cosmologists such as Krauss (author of The Universe from Nothing). It is now known that the current science does not allow the creation of a Universe from absolutely nothing. Physics and cosmology do not deny God. Indeed, the argument of the fine adjustment of constants is strongly indicative of the existence of a great designer. Other evidence confirming this comes from biology. Thousands of experiments in recent decades highlight the impossibility of generating life in the laboratory. There is an intrinsic order in life encoded in DNA that is not present in experiments. Simple calculations show that the 'blind and aimless' evolution described by neo-Darwinists such as Dawkins does not allow the generation of life.

Does science deny God? Did the Universe and life appear by chance or is there evidence of a bigger scheme of thing behind them? In this context, I am concerned with answering these questions. This problem is addressed using knowledge in cosmology, physics and biology. The initial part describes the stages of the 'Genesis' according to physical cosmology from the Big Bang to the appearance of life on Earth. It will touch on problems of why the universe is dominated by matter, the theory of inflation, the limits of our knowledge on the early Universe, the lack of a theory that can allow us to study the phases immediately after the Big Bang, the relation between the concepts of quantum mechanics and the existence of God. It shows how the Universe is finely regulated, that is, the physical constants have been chosen so that life appears in the Universe. The regulation is so strong that we are forced to think the existence of a great designer who has created a particular Universe like the one we are observing. This conclusion can be avoided only if there is an infinity of universes, a multiverse. We ask ourselves if science can create the Universe from nothing and using the same arguments of cosmologists such as Krauss (author of The Universe from Nothing). It is now known that the current science does not allow the creation of a Universe from absolutely nothing. Physics and cosmology do not deny God. Indeed, the argument of the fine adjustment of constants is strongly indicative of the existence of a great designer. Other evidence confirming this comes from biology. Thousands of experiments in recent decades highlight the impossibility of generating life in the laboratory. There is an intrinsic order in life encoded in DNA that is not present in experiments. Simple calculations show that the 'blind and aimless' evolution described by neo-Darwinists such as Dawkins does not allow the generation of life.

You are reading the word "now" right now. But what does that mean? "Now" has bedeviled philosophers, priests, and modern-day physicists from Augustine to Einstein and beyond. In Now, eminent physicist Richard A. Muller takes up the challenge. He begins with remarkably clear explanations of relativity, entropy, entanglement, the Big Bang, and more, setting the stage for his own revolutionary theory of time, one that makes testable predictions. Muller's monumental work will spark major debate about the most fundamental assumptions of our universe, and may crack one of physics' longest-standing enigmas.

This book discusses analogies between relativistic cosmology and various physical systems or phenomena, mostly in the earth sciences, that are described formally by the same equations. Of the two independent equations describing the universe as a whole, one (the Friedmann equation) has the form of an energy conservation equation for one-dimensional motion. The second equation is fairly easy to satisfy (although not automatic): as a result, cosmology lends itself to analogies with several systems. Given that a variety of universes are mathematically possible, several analogies exist. Analogies discussed in this book include equilibrium beach profiles, glacial valleys, the shapes of glaciers, heating/cooling models, freezing bodies of water, capillary fluids, Omori's law for earthquake aftershocks, lava flows, and a few mathematical analogies (Fibonacci's sequence, logistic equation, geodesics of various spaces, and classic variational problems). A century of research in cosmology can solve problems on the other side of an analogy, which in turn can suggest ideas in gravity. Finding a cosmic analogy solves the inverse variational problem of finding a Lagrangian and a Hamiltonian for that system, when nobody thought one exists. Often, the symmetries of the cosmological equations translate in new symmetries of the analogous system. The book surprises the reader with analogies between natural systems and exotic systems such as possible universes.

This is the ideal resource for beginners and experienced stargazers in the United States and Canada, and has been updated to include new and practical information covering events occurring in North America's night sky throughout 2021. This practical guide is both an easy introduction to astronomy and a useful reference for seasoned stargazers. Now includes a section on comets and a map of the moon. Designed specifically for North America. Written and illustrated by astronomical experts, Storm Dunlop and Wil Tirion, and approved by the astronomers of the Royal Observatory Greenwich. Content includes: * Advice on where to start looking. * Easy-to-use star maps for each month with descriptions of what to see. * Positions of the moon and visible planets. * Details of objects and events in 2021. * Now in three editions: Britain and Ireland; North America; Southern Hemisphere.

The extraordinary life of Bernard Lovell began before the First World War and his story encompasses many of the great events of last hundred years: the Second World War, the invention of radio astronomy, the space race, the Moon landings, the exploration of the Solar System, the Cold War, the Cuban missile crisis and the defence of Britain against nuclear attack. It can now be revealed that he was also a spy. "He ranks as one of the great visionary leaders of science," Martin Rees, the Astronomer Royal, said of him. The great radio telescope which Lovell built became and remains one of the most important scientific instruments in the World. The Jodrell Bank Observatory and the Lovell Telescope have held their place at the frontier of research for fifty five years. This book seeks to explore succinctly and accessibly Lovell's life and achievements in the scientific and political context of the time. His legacy remains great, as can be seen from the extensive media coverage and personal tributes that his death in 2012 attracted all over the world. With the seventieth anniversaries of many wartime events in which he played a crucial role, as well as the recent declassification of information relating to his activities as an agent in the Cold War, this biography is sure to have a broad and timely interest.

Following one of the most inspiring and fascinating stories linked to the Royal Observatory, Greenwich, this book centres on the life and achievements of John Harrison - designer and builder of the first accurate marine chronometers. Inspired by the official prize offered in 1714 to anyone who could solve the problem of finding longitudinal position at sea, Harrison produced his four famous 'H' timepieces. In doing so, he helped revolutionise sea travel, saving many thousands of lives. John Harrison and the Quest for Longitude is the intriguing account of one man driven by the need to solve one of the greatest practical problems of his time.