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From Dying Stars to the Birth of Life by Jerry Cranford Pdf
Written in an informal manner, this account tells the incredible story of the birth of an entirely new field of science called Astrobiology—a field that is now investigating whether life might exist on other worlds. From the discovery that other stars in our galaxy are circled by planets to the detection of single-cell organisms found living on Earth in extremely hostile environments, this account details the recent breakthroughs made by astronomers and earth scientists over the last few decades. Based on these findings, it argues that scientists now have the technology they need to move from speculating or fantasizing about extraterrestrials to possibly providing mankind with the first definitive proof that we are not alone.
From Dying Stars to the Birth of Life by Jerry L. Cranford Pdf
Written in an informal manner, this account tells the incredible story of the birth of an entirely new field of science called Astrobiology—a field that is now investigating whether life might exist on other worlds. From the discovery that other stars in our galaxy are circled by planets to the detection of single-cell organisms found living on Earth in extremely hostile environments, this account details the recent breakthroughs made by astronomers and earth scientists over the last few decades. Based on these findings, it argues that scientists now have the technology they need to move from speculating or fantasizing about extraterrestrials to possibly providing mankind with the first definitive proof that we are not alone.
How are the nuclear power plants we call "stars" formed? Where do they get their energy and how do they die--and what does this suggest about the future of the universe? One of the most popular books written on astrophysics, 100 Billion Suns provides an exhilarating and authoritative life history of the stars.
Observer’s Guide to Stellar Evolution by Mike Inglis Pdf
Stellar evolution - the birth, development and death of stars - is central to our current understanding of astronomy, but surprisingly the majority of amateur astronomers lack a full understanding of the physics of stars. Current books on the market tend to be highly theoretical and off-putting, in Observer's Guide to Stellar Evolution, Mike Inglis brings this subject to life in a unique way. By combining a step-by-step introduction with suggestions for practical observations of stars at different stages in their evolution, amateur astronomers regardless of their current level of knowledge, will find this book fascinating and informative. -Accessible to every amateur astronomer, regardless of background knowledge. -Step-by-step introduction to the theory of stellar evolution. -Includes many examples of stars at different stages in their evolution, that the reader can observe for him/herself. -Mathematics is made accessible by being presented in 'boxes'that readers can skip over if they prefer!
“A gripping and beautiful book about the power of love in the face of unimaginable loss.” --Cheryl Strayed For readers of The Bright Hour and When Breath Becomes Air, a moving, transcendent memoir of loss and a stunning exploration of marriage in the wake of unimaginable grief. As the book opens: two-year-old Greta Greene is sitting with her grandmother on a park bench on the Upper West Side of Manhattan. A brick crumbles from a windowsill overhead, striking her unconscious, and she is immediately rushed to the hospital. But although it begins with this event and with the anguish Jayson and his wife, Stacy, confront in the wake of their daughter's trauma and the hours leading up to her death, Once More We Saw Stars quickly becomes a narrative that is as much about hope and healing as it is about grief and loss. Jayson recognizes, even in the midst of his ordeal, that there will be a life for him beyond it--that if only he can continue moving forward, from one moment to the next, he will survive what seems unsurvivable. With raw honesty, deep emotion, and exquisite tenderness, he captures both the fragility of life and absoluteness of death, and most important of all, the unconquerable power of love. This is an unforgettable memoir of courage and transformation--and a book that will change the way you look at the world.
'Stars' presents a vivid account of the fascinating life-stories of stars. The informative and accessible text is combined with breathtaking imagery from the most powerful telescopes to capture the beauty of star birth, the extreme activity of stars and their violent demise.
Encyclopedia of Environmental Change by John A Matthews Pdf
Accessibly written by a team of international authors, the Encyclopedia of Environmental Change provides a gateway to the complex facts, concepts, techniques, methodology and philosophy of environmental change. This three-volume set illustrates and examines topics within this dynamic and rapidly changing interdisciplinary field. The encyclopedia includes all of the following aspects of environmental change: Diverse evidence of environmental change, including climate change and changes on land and in the oceans Underlying natural and anthropogenic causes and mechanisms Wide-ranging local, regional and global impacts from the polar regions to the tropics Responses of geo-ecosystems and human-environmental systems in the face of past, present and future environmental change Approaches, methodologies and techniques used for reconstructing, dating, monitoring, modelling, projecting and predicting change Social, economic and political dimensions of environmental issues, environmental conservation and management and environmental policy Over 4,000 entries explore the following key themes and more: Conservation Demographic change Environmental management Environmental policy Environmental security Food security Glaciation Green Revolution Human impact on environment Industrialization Landuse change Military impacts on environment Mining and mining impacts Nuclear energy Pollution Renewable resources Solar energy Sustainability Tourism Trade Water resources Water security Wildlife conservation The comprehensive coverage of terminology includes layers of entries ranging from one-line definitions to short essays, making this an invaluable companion for any student of physical geography, environmental geography or environmental sciences.
“Lakes is my favorite kind of natural history: meticulously researched, timely, comprehensive, and written with imagination and verve.”—Jerry Dennis, author of The Living Great Lakes Lakes might be the most misunderstood bodies of water on earth. And while they may seem commonplace, without lakes our world would never be the same. In this revealing look at these lifegiving treasures, John Richard Saylor shows us just how deep our connection to still waters run. Lakes is an illuminating tour through the most fascinating lakes around the world. Whether it’s Lake Vostok, located more than two miles beneath the surface of Antarctica, whose water was last exposed to the atmosphere perhaps a million years ago; Lake Baikal in southern Siberia, the world’s deepest and oldest lake formed by a rift in the earth’s crust; or Lake Nyos, the so-called Killer Lake that exploded in 1986, resulting in hundreds of deaths, Saylor reveals to us the wonder that exists in lakes found throughout the world. Along the way we learn all the many forms that lakes take—how they come to be and how they feed and support ecosystems—and what happens when lakes vanish.
Robert Naeye is renowned for his lucid contributions to Astronomy, the world's biggest selling astronomy magazine. In Through the Eyes of Hubble: The Birth, Life and Violent Death of Stars, he uses 100 striking color images from the Hubble Space Telescope to illuminate the mind-stretching story of how stars are born, live, and die. Although focusing on astrophysics, the account is compelling, equation free, and accessible to everyone. In addition, there are eight beautiful paintings to appreciate, including works by the most famous living space artist, Michael Carroll.
*Includes pictures *Includes a bibliography for further reading When people look up into the night sky, the stars seem fixed and immutable, as unchanging as the darkness of space itself, but the truth is that stars are born, live and die in a never-ending cycle of creation and annihilation. These cycles stretch over such vast spans of time that, to short-lived humans, they seem to last forever. No one knows just how many stars there are, but their number is almost beyond comprehension. When people look up into the night sky, they can see further than they might guess: up to 19 quadrillion miles, the distance to Deneb in Cygnus, a star that is visible from most inhabited parts of Earth. In total, around five thousand stars are visible to the naked eye, though only around two thousand are visible at any one time from a particular place on Earth. All the visible stars are bigger and brighter than the Sun. Of course, there are many more known stars than those that can be seen with the naked eye. Astronomers estimate that in the Milky Way, there may be more than three hundred billion stars, and every other galaxy may have a similar number of stars. How many galaxies are there in the Universe? Again, no one is certain, but most astronomers agree that there must be many billions. Stars begin as vast clouds of dust and gas within galaxies and are known as nebulae. Due to Newton's Law of Global Attraction, the densest areas in these nebulae pull-in matter from the surrounding space. The more mass they gain, the more mass they attract. Over time, this accumulation can lead to the creation of a star. From that moment on, an eternal battle begins: gravity tends to contract the star while its growing inner pressure tends to expand it. Nebulae are stellar nurseries, the places where stars are created and an essential part of the life cycle of the Universe. Stars do not last forever. Over time they gradually lose energy and finally die. This process of the creation of new stars and the gradual death of existing stars is part of a vast, cosmic process of recycling that continues all the time. However, that raises the question of how the very first stars were formed and that in turn leads to questions about the origin of the Universe itself. However, the life cycle of stars also has a direct relationship to life here on Earth. Singer Joni Mitchell famously included the line "we are stardust" in her hit song "Woodstock." Surprisingly, it seems that she was absolutely right. In the beginning, the Universe comprised hydrogen, small quantities of helium, minuscule amounts of lithium and almost nothing else. Stars are the engines that provide the raw material from which life itself as well as stellar bodies are created. Each star is like a factory that uses nuclear fusion to convert hydrogen into helium and that in turn is used to create carbon, nitrogen, oxygen and many other elements. When a star dies, it ejects its outer layers, throwing these elements off as cosmic dust. The gravity of planets attracts and captures this dust which settles on the surface, introducing new elements. It is estimated that more than forty thousand tons of cosmic dust arrives on Earth every year and this process has continued as long as there has been a planet Earth. Some of the tiny pieces of dust (most are smaller than one-hundredth the width of a human hair) are very old indeed. Scientists have found what they call "original stardust" on meteorites and asteroids. Many of these have been drifting in space since before the Sun was created. The elements in this dust are the fundamental building-blocks of life and every living organism on Earth is created from elements that were originally produced in long-dead stars. It seems that humans and everything else on the planet really did begin as stardust.
Life in the Universe, 5th Edition by Jeffrey Bennett,Seth Shostak,Nicholas Schneider,Meredith MacGregor Pdf
The world’s leading textbook on astrobiology—ideal for an introductory one-semester course and now fully revised and updated Are we alone in the cosmos? How are scientists seeking signs of life beyond our home planet? Could we colonize other planets, moons, or even other star systems? This introductory textbook, written by a team of four renowned science communicators, educators, and researchers, tells the amazing story of how modern science is seeking the answers to these and other fascinating questions. They are the questions that are at the heart of the highly interdisciplinary field of astrobiology, the study of life in the universe. Written in an accessible, conversational style for anyone intrigued by the possibilities of life in the solar system and beyond, Life in the Universe is an ideal place to start learning about the latest discoveries and unsolved mysteries in the field. From the most recent missions to Saturn’s moons and our neighboring planet Mars to revolutionary discoveries of thousands of exoplanets, from the puzzle of life’s beginning on Earth to the latest efforts in the search for intelligent life elsewhere, this book captures the imagination and enriches the reader’s understanding of how astronomers, planetary scientists, biologists, and other scientists make progress at the cutting edge of this dynamic field. Enriched with a wealth of engaging features, this textbook brings any citizen of the cosmos up to speed with the scientific quest to discover whether we are alone or part of a universe full of life. An acclaimed text designed to inspire students of all backgrounds to explore foundational questions about life in the cosmos Completely revised and updated to include the latest developments in the field, including recent exploratory space missions to Mars, frontier exoplanet science, research on the origin of life on Earth, and more Enriched with helpful learning aids, including in-chapter Think about It questions, optional Do the Math and Special Topic boxes, Movie Madness boxes, end-of-chapter exercises and problems, quick quizzes, and much more Supported by instructor’s resources, including an illustration package and test bank, available upon request
Uses photographs taken in space to introduce a variety of star types, and explains how stars are born, live, and die. Suggested level: primary, intermediate.
Unifying the Universe: The Physics of Heaven and Earth presents a non-technical approach to physics for the lay-science enthusiast. This popular textbook, which evolved from a conceptual course at Cornell University, is intended for non-science undergraduate students taking their first physics module. This second edition maintains its unique approach in crossing boundaries between physics and humanities, with connections to art, poetry, history, and philosophy. It explores how the process of scientific thought is inextricably linked with cultural, creative, and aesthetic aspects of human endeavor, opening the readers up to new ways of looking at the world. The text has been fully updated throughout to address current and exciting new topics in the field, such as exo-planets, the accelerating Universe, dark matter, dark energy, gravitational waves, super-symmetry, string theory, big bang cosmology, and the Higgs boson. There is also an entirely new chapter on the Quantum World, which connects the fascinating topics of quantum entanglement and quantum computing. Key Features: Provides a solid, yet accessible, background to basic physics without complex mathematics Uses a human interest approach to show how science is significant for more than its technological consequences Discusses the arts and philosophies of historical periods that are pertinent to the subject
