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.

What does it take to consider a planet potentially habitable? If a planet is suitable for life, could life be present? Is life on other planets inevitable? Searching for Habitable Worlds answers these questions and provides both the general public and astronomy enthusiasts with a richly illustrated discussion of the most current knowledge regarding the search for extrasolar planets. Nearly everyone wants to know if we are alone in the universe. This book might not have the answers, but shows where we should look. This book is a fun and accessible book for everyone from middle schoolers to amateur astronomers of all ages. The use of non-technical language and abundant illustrations make this a quick read to inform everyone about the latest movement in the search for other planets that we might be able to inhabit. After a brief discussion on why humans are hard-wired to be curious, and to explore the unknown, the book describes what extrasolar planets are, how to detect them, and how to pin down potential targets. In addition, a data-driven list of the best candidates for habitability is profiled and the next generation of exoplanet-hunting scientific instruments and probes are identified.

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.

Roger Penrose, one of the most accomplished scientists of our time, presents the only comprehensive and comprehensible account of the physics of the universe. From the very first attempts by the Greeks to grapple with the complexities of our known world to the latest application of infinity in physics, "The Road to Reality" carefully explores the movement of the smallest atomic particles and reaches into the vastness of intergalactic space. Here, Penrose examines the mathematical foundations of the physical universe, exposing the underlying beauty of physics and giving us one the most important works in modern science writing.

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.

From renowned physicist Fred Alan Wolf comes his enthralling and accessible exploration of parallel universes and the various theories surrounding them.In this "enthralling read" (Publishers Weekly), travel through the frontiers of space as physicist Fred Alan Wolf guides you through the complex yet intruging concept of parallel universes. Challenge your preceptions of the universe and explore ideas as varied as superspace theater and zero-time ghosts and even explore a future where time travel is real and black holes are gateways rather than endings.