The Threat of Large Earth-orbit Crossing Asteroids PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Threat of Large Earth-orbit Crossing Asteroids PDF full book. Access full book title The Threat of Large Earth-orbit Crossing Asteroids by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Space. Download full books in PDF and EPUB format.
Author: United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Space
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 208
Get Book Here
Book Description
Author: United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Space
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 208
Get Book Here
Book Description
Author: United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Space
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 216
Get Book Here
Book Description
Author: Tom Gehrels
Publisher: University of Arizona Press
ISBN: 9780816515059
Category : Science
Languages : en
Pages : 1340
Get Book Here
Book Description
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.
Author: United States. Congress. House. Committee on Science. Subcommittee on Space and Aeronautics
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 128
Get Book Here
Book Description
Author: William Frederick Bottke
Publisher: University of Arizona Press
ISBN: 9780816522811
Category : Science
Languages : en
Pages : 818
Get Book Here
Book Description
Two hundred years after the first asteroid was discovered, asteroids can no longer be considered mere points of light in the sky. Spacecraft missions, advanced Earth-based observation techniques, and state-of-the-art numerical models are continually revealing the detailed shapes, structures, geological properties, and orbital characteristics of these smaller denizens of our solar system. This volume brings together the latest information obtained by spacecraft combined with astronomical observations and theoretical modeling, to present our best current understanding of asteroids and the clues they reveal for the origin an,d evolution of the solar system. This collective knowledge, prepared by a team of more than one hundred international authorities on asteroids, includes new insights into asteroid-meteorite connections, possible relationships with comets, and the hazards posed by asteroids colliding with Earth. The book's contents include reports on surveys based on remote observation and summaries of physical properties; results of in situ exploration; studies of dynamical, collisional, cosmochemical, and weathering evolutionary processes; and discussions of asteroid families and the relationships between asteroids and other solar system bodies. Two previous Space Science Series volumes have established standards for research into asteroids. Asteroids III carries that tradition forward in a book that will stand as the definitive source on its subject for the next decade.
Author: Mark Monmonier
Publisher: University of Chicago Press
ISBN: 0226534294
Category : Science
Languages : en
Pages : 380
Get Book Here
Book Description
No place is perfectly safe, but some places are more dangerous than others. Whether we live on a floodplain or in "Tornado Alley," near a nuclear facility or in a neighborhood poorly lit at night, we all co-exist uneasily with natural and man-made hazards. As Mark Monmonier shows in this entertaining and immensely informative book, maps can tell us a lot about where we can anticipate certain hazards, but they can also be dangerously misleading. California, for example, takes earthquakes seriously, with a comprehensive program of seismic mapping, whereas Washington has been comparatively lax about earthquakes in Puget Sound. But as the Northridge earthquake in January 1994 demonstrated all too clearly to Californians, even reliable seismic-hazard maps can deceive anyone who misinterprets "known fault-lines" as the only places vulnerable to earthquakes. Important as it is to predict and prepare for catastrophic natural hazards, more subtle and persistent phenomena such as pollution and crime also pose serious dangers that we have to cope with on a daily basis. Hazard-zone maps highlight these more insidious hazards and raise awareness about them among planners, local officials, and the public. With the help of many maps illustrating examples from all corners of the United States, Monmonier demonstrates how hazard mapping reflects not just scientific understanding of hazards but also perceptions of risk and how risk can be reduced. Whether you live on a faultline or a coastline, near a toxic waste dump or an EMF-generating power line, you ignore this book's plain-language advice on geographic hazards and how to avoid them at your own peril.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309149681
Category : Science
Languages : en
Pages : 152
Get Book Here
Book Description
The United States spends approximately $4 million each year searching for near-Earth objects (NEOs). The objective is to detect those that may collide with Earth. The majority of this funding supports the operation of several observatories that scan the sky searching for NEOs. This, however, is insufficient in detecting the majority of NEOs that may present a tangible threat to humanity. A significantly smaller amount of funding supports ways to protect the Earth from such a potential collision or "mitigation." In 2005, a Congressional mandate called for NASA to detect 90 percent of NEOs with diameters of 140 meters of greater by 2020. Defending Planet Earth: Near-Earth Object Surveys and Hazard Mitigation Strategies identifies the need for detection of objects as small as 30 to 50 meters as these can be highly destructive. The book explores four main types of mitigation including civil defense, "slow push" or "pull" methods, kinetic impactors and nuclear explosions. It also asserts that responding effectively to hazards posed by NEOs requires national and international cooperation. Defending Planet Earth: Near-Earth Object Surveys and Hazard Mitigation Strategies is a useful guide for scientists, astronomers, policy makers and engineers.
Author: Ilias S. Kotsireas
Publisher: Springer
ISBN: 3319437097
Category : Mathematics
Languages : en
Pages : 379
Get Book Here
Book Description
This volume results from the “Second International Conference on Dynamics of Disasters” held in Kalamata, Greece, June 29-July 2, 2015. The conference covered particular topics involved in natural and man-made disasters such as war, chemical spills, and wildfires. Papers in this volume examine the finer points of disasters through: Critical infrastructure protection Resiliency Humanitarian logistic Relief supply chains Cooperative game theory Dynamical systems Decision making under risk and uncertainty Spread of diseases Contagion Funding for disaster relief Tools for emergency preparedness Response, and risk mitigation Multi-disciplinary theories, tools, techniques and methodologies are linked with disasters from mitigation and preparedness to response and recovery. The interdisciplinary approach to problems in economics, optimization, government, management, business, humanities, engineering, medicine, mathematics, computer science, behavioral studies, emergency services, and environmental studies will engage readers from a wide variety of fields and backgrounds.
Author: Richard B. Armstrong
Publisher: McFarland
ISBN: 1476612307
Category : Performing Arts
Languages : en
Pages : 239
Get Book Here
Book Description
The first editon was called "the most valuable film reference in several years" by Library Journal. The new edition published in hardcover in 2001 includes more than 670 entries. The current work is a paperback reprint of that edition. Each entry contains a mini-essay that defines the topic, followed by a chronological list of representative films. From the Abominable Snowman to Zorro, this encyclopedia provides film scholars and fans with an easy-to-use reference for researching film themes or tracking down obscure movies on subjects such as suspended animation, viral epidemics, robots, submarines, reincarnation, ventriloquists and the Olympics ("Excellent" said Cult Movies). The volume also contains an extensive list of film characters and series, including B-movie detectives, Western heroes, made-for-television film series, and foreign film heroes and villains.
Author: Deborah Harmes
Publisher: Lulu.com
ISBN: 0975198815
Category : Religion
Languages : en
Pages : 170
Get Book Here
Book Description
This long awaited sequel to The Dreamkeeper Messages explains the scope and nature of the psychic and prophetic visions that the author, Dr. Deborah Harmes, has experienced since childhood. Filled with fascinating visions that travel both backwards and forwards in time and background history about Deborah's relationship with the otherworldly being she calls The Dreamkeeper. The discussion of the nature of time helps to explain why many of us occasionally feel that we are living in the wrong lifetime. The section of information on Remote Viewing discusses just how far back in history that type of psychic viewing really goes. You might be quite surprised at what went on during World War II! This book also contains important information about time travel, global climate and atmospheric change and the creation of hybrid and robotic humans. We are living in challenging times and this book helps to both explain that and offer non-religious spiritual guidance.
