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What happens when two massive hunks of hurtling space debris slam into each other? Welcome to round one in the Cosmic Collisions series—an exciting children’s debut from an expert astrophysicist. There’s a comet speeding in from the outer solar system, and it’s about to slam into an asteroid. Who will be left standing after this interplanetary smackdown? The pockmarked asteroid, a veteran fighter who’s already seen some action? Or the dazzling comet, with its incredible velocity and a tail that stretches millions of miles? Kicking off a dynamic series on cosmic collisions, Asteroid vs. Comet starts by comparing the two opponents, then offers hints and context to encourage readers to use real science to form a hypothesis. Action-packed full-color illustrations with a graphic, comic-book feel will attract reluctant readers and kids who love smash-and-crash, along with budding scientists. Curious readers can find back matter addressing the question of fact versus fiction, how to become a citizen scientist, and comets and asteroids in the news.
As end-of-the-world scenarios go, an apocalyptic collision with an asteroid or comet is the new kid on the block, gaining respectability only in the last decade of the 20th century with the realisation that the dinosaurs had been wiped out by just such an impact. Now the science community is making up for lost time, with worldwide efforts to track the thousands of potentially hazardous near-Earth objects, and plans for high-tech hardware that could deflect an incoming object from a collision course – a procedure depicted, with little regard for scientific accuracy, in several Hollywood movies. Astrophysicist and science writer Andrew May disentangles fact from fiction in this fast-moving and entertaining account, covering the nature and history of comets and asteroids, the reason why some orbits are more hazardous than others, the devastating local and global effects that an impact event would produce, and – more optimistically – the way future space missions could avert a catastrophe.
"An historical survey about asteroid hits sustained by Earth and the defenses being prepared against future asteroid-caused catastrophe"--
With this book Immanuel Velikovsky first presented the revolutionary results of his 10-year-long interdisciplinary research to the public, founded modern catastrophism - based on eyewitness reports by our ancestors - shook the doctrine of uniformity of geology as well as Darwin's theory of evolution, put our view of the history of our solar system, of the Earth and of humanity on a completely new basis - and caused an uproar that is still going on today. Worlds in Collision - written in a brilliant, easily understandable and entertaining style and full to the brim with precise information - can be considered one of the most important and most challenging books in the history of science. Not without reason was this book found open on Einstein's desk after his death. For all those who have ever wondered about the evolution of the earth, the history of mankind, traditions, religions, mythology or just the world as it is today, Worlds in Collision is an absolute MUST-READ!
Cosmic collisions have forever shaped the planets in our solar system, sculpting Earth and our Moon. They are still happening right in our neighborhood, as we saw in July 1994 when comet fragments bombarded the surface of Jupiter. What if a collision of that magnitude were to occur on Earth? Would the effect be anywhere near that of the collision that wiped out the dinosaurs 65 million years ago? Scientists have just begun to track distant asteroids and comets that may pose a threat to Earth in years to come. In Scientific American Focus: Cosmic Collisions Dana Desonie traces the history of cosmic collisions and proposes various solutions to what many view as our impending doom, answering these questions and more: -How often does Earth experience a cosmic collision? -Did a massive collision kill off the dinosaurs? -How do scientists track and predict collisions? -What did we learn from the Jupiter collision of 1994? -How real is the threat of a collision in our future? -How can we defend our planet?
An insider's look at the science of near-Earth comets and asteroids Of all the natural disasters that could befall us, only an Earth impact by a large comet or asteroid has the potential to end civilization in a single blow. Yet these near-Earth objects also offer tantalizing clues to our solar system's origins, and someday could even serve as stepping-stones for space exploration. In this book, Donald Yeomans introduces readers to the science of near-Earth objects—its history, applications, and ongoing quest to find near-Earth objects before they find us. In its course around the sun, the Earth passes through a veritable shooting gallery of millions of nearby comets and asteroids. One such asteroid is thought to have plunged into our planet sixty-five million years ago, triggering a global catastrophe that killed off the dinosaurs. Yeomans provides an up-to-date and accessible guide for understanding the threats posed by near-Earth objects, and also explains how early collisions with them delivered the ingredients that made life on Earth possible. He shows how later impacts spurred evolution, allowing only the most adaptable species to thrive—in fact, we humans may owe our very existence to objects that struck our planet. Yeomans takes readers behind the scenes of today’s efforts to find, track, and study near-Earth objects. He shows how the same comets and asteroids most likely to collide with us could also be mined for precious natural resources like water and oxygen, and used as watering holes and fueling stations for expeditions to Mars and the outermost reaches of our solar system.
In 1993, the U.S. Department of Defense declassified information dealing with frequent explosions in the upper atmosphere caused by meteoric impact. It is estimated that impacts have occurred of a magnitude equivalent to the atomic bomb detonated at Hiroshima. Not all such space voyagers meet their end in the atmosphere, however; huge craters attest to the bombardment of earth over millions of years, and a major impact may have resulted in the extinction of dinosaurs. An impact in Siberia near the beginning of this century proves that such events are not confined to geologic time. Hazards Due to Comets and Asteroids marks a significant step in the attempt to come to grips with the threats posed by such phenomena. It brings together more than one hundred scientists from around the world, who draw on observational and theoretical research to focus on the technical problems related to all aspects of dealing with these hazards: searching for and identifying hazardous comets and asteroids; describing their statistics and characteristics; intercepting and altering the orbits of dangerous objects; and applying existent technologies—rocket boosters, rendezvous and soft-landing techniques, instrumentation—to such missions. The book considers defensive options for diverting or disrupting an approaching body, including solar sails, kinetic-energy impacts, nuclear explosives, robotic mass drivers, and various propulsion systems. A cataclysmic impact posing a threat to life on Earth is a possibility that tomorrow's technology is capable of averting. This book examines in depth the reality of the threat and proposes practical measures that can be initiated now should we ever need to deal with it.
Controversial archaeological and astronomical "discoveries" have been the subject of countless news stories, best-selling books, movies, and television programs. Promoted (but seldom critically evaluated) are the theories that markings in the desert of Peru are the remains of an ancient airfield used by space visitors, that the Great Pyramid of Giza in Egypt exhibits advanced technology unknown to the ancient Egyptians, and that there were near-collisions between planets of our solar system in historical times.This book critically evaluates many of these popular hypotheses about man''s early history. It presents the most important evidence and arguments for and against theories of a universal flood, the lost continent of Atlantis, mysterious pyramid powers, pre-Columbian voyages to America by ancient Egyptians and Phoenicians, and Velikovsky''s cosmic catastrophism.Professor Stiebing stresses the need for careful and objective analysis of the "evidence" used to support radical reconstructions of the past. The book discusses radio-carbon dating, archaeological stratigraphy, textual interpretation, and epigraphy as well as emphasis on the proper use of data provided by geology, astronomy and other sciences. It is written in non-technical language and will appeal to a wide audience.
Leading specialists in various disciplines were first invited to a multidisciplinary workshop funded by ICSU on the topic to gain a better appreciation and perspective on the subject of comet/asteroid impacts as viewed by different disciplines. This volume provides a necessary link between various disciplines and comet/asteroid impacts.
How did mythology and religion first begin? Where did the ideas of “God,” “spirit” and “soul” come from? The author takes us to ancient times, showing us how early humans struggled to make sense of the world around them. Drawing on history, geology, volcanology, anthropology, chemistry, astronomy, archeology, oceanography, biology and cognitive science, the author reveals the surprising true meaning of our most sacred stories. “Bill Lauritzen is some kind of genius.” Sir Arthur C. Clarke. “Anyone interested in science and religion should read this book.” Dr. Elizabeth Loftus, Ph.D., psychologist, UC Irvine. “Bill Lauritzen has systematically analyzed, from an original viewpoint, the historic sources related to the origins of religion. He summarized his research in this interesting and thought-provoking book.” Mamikon Mnatsakanian, Ph.D, astrophysicist and mathematician, California Institute of Technology.