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For going on two decades, Scientific American's "Ask the Experts" column has been answering reader questions on all fields of science. We've taken your questions from the basic to the esoteric and reached out to top scientists, professors and researchers to find out why the sky is blue or whether we really only use 10% of our brains. Now, we've combed through our archives and have compiled some of the most interesting questions (and answers) into a series of eBooks. Organized by subject, each eBook provides short, easily digestible answers to questions on that particular branch of the sciences. The second eBook in our series – Astronomy – looks skyward and explains a variety of universal phenomena and theories. Are you curious about how planets acquire rings or what creates those gorgeous spiral arms around galaxies? Or maybe you want to know why the Big Bang didn't collapse into a black hole. Astrophysicists, professors and scientists tackle questions about stars, planets, asteroids, galaxies and nebulae, the expanding universe as well as the oddities – black holes, wormholes and dark matter. Look inside and find out what we know and what we don't know about these wonders.
This is not a conventional book. It is designed to stimulate and challenge all people who are curious to find out about the world they inhabit and their place within it. It does this by suggesting questions and lines of questioning on a wide range of topics. The book does not provide answers or model arguments but prompts people to create their own questions and a reading log or journal. To this end, almost all questions have a list of books or articles to provide a starter for stimulating further reading. Once you start, you will be hooked! Never stop questioning.
Written by a professor of computer science and a reference librarian, this guide covers basic browser usage, e-mail, and discussion groups; discusses such Internet staples as FTP and Usenet newsgroups; presents and compares numerous search engines; and includes models for acquiring, evaluating, and citing resources within the context of a research project. The emphasis of the book is on learning how to create search strategies and search expressions, how to evaluate information critically, and how to cite resources. All of these skills are presented as within the context of step-by-step activities designed to teach basic Internet research skills to the beginner and to hone the skills of the seasoned practitioner.
In the two decades since astronomers first discovered the existence of a planet outside of our solar system, "exoplanetology" has become the hottest specialty in astrophysics. Scientists young and old, inspired by the thought of finding either another habitable world or the Holy Grail of space exploration, life itself, flocked to be part of this burgeoning field. With so much brainpower on hand, it's no wonder that investigative techniques advanced more quickly than anyone would have thought. To date, more than 1,000 exoplanets have been found, and in this eBook, Exoplanets: Worlds Without End, we delve into this quest that sometimes sounds more like science fiction than science. Section 1, "Exo-Search," sets the stage and outlines how astronomers are looking for new worlds: the various techniques, how they've improved to date and plans for upcoming missions. Sections 2 through 5 analyze the discoveries, often both controversial and strange. Section 3 focuses on the race to find other Earth-like planets. With excitement at an all-time high, author Ron Cowen cautions against publishing too quickly out of optimism. In "Noisy Stars May Create Phantom Planets," Cowen describes how stellar activity can mimic the signs of tiny exoplanets. Section 4 takes on the real oddballs. They may be remnants of gas giants whose atmospheres were stripped away, as in the piece "The Bones of Giants," or have alien chemistries. Some trace their course around white dwarfs, the results of a second generation of planets forming around old stars. Section 5 asks if there's life out there. In "Anybody Home?" John Matson describes the search for the chemical signatures that scientists think are telltale signs that we're not the only living things in this part of the universe. So far, we're still alone out here, but in a field where the discoveries are coming thick and fast, it's exciting to think that it could all change tomorrow.
The story of the people who see beyond the stars—an astronomy book for adults still spellbound by the night sky Embark on a captivating cosmic journey with The Last Stargazers. This enthralling book takes you on an awe-inspiring exploration of the night sky, offering a unique perspective on the vast celestial wonders that have fascinated humanity for millennia. Written by astrophysicist Dr. Emily Levesque, The Last Stargazers combines scientific expertise with captivating storytelling, making it the perfect companion for both astronomy enthusiasts and curious minds. Dr. Levesque's passion for the stars shines through as she shares her personal experiences and encounters while working at some of the world's most renowned observatories. Delve into the fascinating world of astronomy as you uncover the secrets of distant galaxies, supernovae, and elusive celestial phenomena. Discover: Inspiring narratives: Dr. Levesque's engaging storytelling transports readers to the front lines of astronomical research, providing a behind-the-scenes glimpse into the life of a modern-day stargazer. Cutting-edge research: Stay up to date with the latest scientific breakthroughs and advancements in the field of astronomy, as Dr. Levesque shares her firsthand experiences and encounters. Accessible explanations: Complex astronomical concepts are made understandable and relatable, allowing readers of all backgrounds to appreciate and comprehend the wonders of the cosmos. Personal perspective: Gain insight into the personal journey of a dedicated scientist as she navigates the challenges and triumphs of studying the stars. Whether you're a seasoned astronomer, a casual stargazer, or simply someone with a curiosity about the universe, The Last Stargazers is an indispensable guide that will ignite your passion for the cosmos and leave you in awe of the wonders that lie beyond. Take a leap into the vast unknown on a celestial odyssey like no other.
"Vital Questions" examines issues which have enormous influence in shaping the attitudes of our society and the way we think and look at life. Most of us have assumed for years that there must be overwhelming proof for such well established ideas as the Big bang, Relativity, and Evolution. On closer investigation one finds that the evidence is astonishingly flimsy. A number of theories taken as indisputable, from primary school to university, are examined and found to be in serious doubt.
The touchstone for contemporary stargazers. This classic, groundbreaking guide has been the go-to field guide for both beginning and experienced amateur astronomers for nearly 30 years. The fourth edition brings Terence Dickinson and Alan Dyer's invaluable manual completely up-to-date. Setting a new standard for astronomy guides, it will serve as the touchstone for the next generation of stargazers as well as longtime devotees. Technology and astronomical understanding are evolving at a breathtaking clip, and to reflect the latest information about observing techniques and equipment, this massively revised and expanded edition has been completely rebuilt (an additional 48 pages brings the page count to 416). Illustrated throughout with all-new photographs and star charts, this edition boasts a refreshed design and features five brand-new chapters, including three essential essays on binocular, telescope and Moon tours by renowned astronomy writer Ken Hewitt-White. With new content on naked-eye sky sights, LED lighting technology, WiFi-enabled telescopes and the latest advances in binoculars, telescopes and other astronomical gear, the fourth edition of The Backyard Astronomer's Guide is sure to become an indispensable reference for all levels of stargazers. New techniques for observing the Sun, the Moon and solar and lunar eclipses are an especially timely addition, given the upcoming solar eclipses in 2023 and 2024. Rounding out these impressive offerings are new sections on dark sky reserves, astro-tourism, modern astrophotography and cellphone astrophotography, making this book an enduring must-have guide for anyone looking to improve his or her astronomical viewing experience. The Backyard Astronomer's Guide also features a foreword by Dr. Sara Seager, a Canadian-American astrophysicist and planetary scientist at the Massachusetts Institute of Technology and an internationally recognized expert in the search for exoplanets.
Gratuitous Suffering and the Problem of Evil: A Comprehensive Introduction is among the first book-length discussions of theistic approaches to the problem of evil. Bryan Frances's lucid analyses of a variety of possible responses to the problem of evil will provide serious students or general readers much material with which to consider this ancient and contemporary concern. The book offers many useful pedagogical features, including chapter overviews, study questions, summaries, and suggested readings.
This is the first book to provide a step-by-step guide to the methods and practical aspects of acquiring, modelling, storing and sharing knowledge. The reader is led through 47 steps from the inception of a project to its conclusion. Each is described in terms of reasons, required resources, activities, and solutions to common problems. In addition, each step has a checklist which tracks the key items that should be achieved.