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Shapes And Spins Of Near Earth Asteroids
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Book Synopsis Shapes and Spins of Near-Earth Asteroids by : Michael W. Busch
Download or read book Shapes and Spins of Near-Earth Asteroids written by Michael W. Busch and published by Universal-Publishers. This book was released on 2010-05 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asteroids are diverse and numerous solar system objects, from the large number of objects in the main asteroid belt to the relatively small near-Earth population. Understanding their physical properties is essential to understanding the evolution of the solar system, and asteroid morphology is a complex field in its own right. The histories of individual asteroids, and particularly near-Earth objects, reflect continuous interaction among their shapes, rotation states, and orbits due to the effects of radiation pressure. Radar astronomy has provided detailed information on the orbits, sizes, shapes, rotation states, and composition of many asteroids. To improve the capabilities of asteroid radar observations, I have developed the technique of radar speckle tracking. The echoes from different points on the surface of a radar target interfere with each other, producing a pattern of bright and dark speckles across the surface of the Earth. Using radio astronomy techniques, I track the motion of speckles between several ground stations during a radar experiment to accurately determine the rotation state of the target. Speckle tracking is a powerful tool both to determine the orbital evolution of near-Earth asteroids, particularly potential Earth impactors, and to survey the overall physical properties of the asteroid population. In addition, I have studied applying the techniques of adaptive optics and radio interferometry to asteroid science. These will become more useful with the next generation of asteroid-detecting surveys and the construction of large sub-millimeter interferometers. Interferometry in particular will soon be able to survey the entire asteroid belt.
Book Synopsis Defending Planet Earth by : National Research Council
Download or read book Defending Planet Earth written by National Research Council and published by National Academies Press. This book was released on 2010-07-21 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Asteroids IV written by Patrick Michel and published by University of Arizona Press. This book was released on 2015-12-31 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade, asteroids have come to the forefront of planetary science. Scientists across broad disciplines are increasingly recognizing that understanding asteroids is essential to discerning the basic processes of planetary formation, including how their current distribution bespeaks our solar system’s cataclysmic past. For explorers, the nearest asteroids beckon as the most accessible milestones in interplanetary space, offering spaceflight destinations easier to reach than the lunar surface. For futurists, the prospects of asteroids as commercial resources tantalize as a twenty-first-century gold rush, albeit with far greater challenges than faced by nineteenth-century pioneers. For humanity, it is the realization that asteroids matter. It is not a question of if—but when—the next major impact will occur. While the disaster probabilities are thankfully small, fully cataloging and characterizing the potentially hazardous asteroid population remains unfinished business. Asteroids IV sets the latest scientific foundation upon which all these topics and more will be built upon for the future. Nearly 150 international authorities through more than 40 chapters convey the definitive state of the field by detailing our current astronomical, compositional, geological, and geophysical knowledge of asteroids, as well as their unique physical processes and interrelationships with comets and meteorites. Most importantly, this volume outlines the outstanding questions that will focus and drive researchers and students of all ages toward new advances in the coming decade and beyond.
Author :William Frederick Bottke Publisher :University of Arizona Press ISBN 13 :9780816522811 Total Pages :818 pages Book Rating :4.5/5 (228 download)
Book Synopsis Asteroids III by : William Frederick Bottke
Download or read book Asteroids III written by William Frederick Bottke and published by University of Arizona Press. This book was released on 2002-01-01 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Near Earth Objects, Our Celestial Neighbors (IAU S236) by : International Astronomical Union. Symposium
Download or read book Near Earth Objects, Our Celestial Neighbors (IAU S236) written by International Astronomical Union. Symposium and published by Cambridge University Press. This book was released on 2007-05-24 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: IAU S236 concentrates on specific techniques of observation and modeling Near Earth Objects (NEOs).
Download or read book Asteroids written by Edward C. Blair and published by Nova Publishers. This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the bulk of asteroids floating in space between the orbits of Mars and Jupiter, astronomers puzzle over where these rocks came from. Are they the remnants of a planet? Excess not used in the formation of the Solar System? Nothing more than random bits of debris? The location of the belt makes for a quasi-barrier separating the inner from the outer planets. Perhaps asteroids were meant to discourage human space exploration. NASA has sent missions to explore the asteroid belt and the rocks themselves, and those missions have yielded some interesting observations on the composition of the asteroids but no definitive answer as to their origin. Earth-based tools such as telescopes and satellites also contribute to asteroid research but cannot plumb the depths behind these varied chunks of flotsam. Presented in this book is a list of carefully chosen abstracts and citations of relevant literature about asteroids and the research into them. Prior to this listing, though, comes an overview of the nature of the asteroids and what we know now about them and what we hope to discover in the future. lifeless but mysterious rocks inhabiting the solar system. To conclude, easy access is provided through author, title, and subject indexes.
Book Synopsis Assessment and Mitigation of Asteroid Impact Hazards by : Josep M. Trigo-Rodríguez
Download or read book Assessment and Mitigation of Asteroid Impact Hazards written by Josep M. Trigo-Rodríguez and published by Springer. This book was released on 2016-12-19 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a compilation of the research presented at the International Asteroid Day workshop which was celebrated at Barcelona on June 30th, 2015. The proceedings discuss the beginning of a new era in the study and exploration of the solar system’s minor bodies. International Asteroid Day commemorates the Tunguska event of June 30th, 1908. The workshop’s goal was to promote the importance of dealing proactively with impact hazards from space. Multidisciplinary experts contributed to this discussion by describing the nature of comets and asteroids along with their offspring, meteoroids. New missions to return material samples of asteroids back to Earth such as Osiris-REx and Hayabusa 2, as well as projects like AIM and DART which will test impact deflection techniques for Potentially Hazardous Asteroids encounters were also covered. The proceedings include both an outreach level to popularize impact hazards and a scientific character which covers the latest knowledge on these topics, as well as offering proposals of promising new techniques that will help gain new insights of the properties of these challenging bodies by studying meteoroids and meteorites. Asteroids, comets, meteoroids and meteorites are introduced with descriptions of their nature, origin, and solar system pathways.
Author :United States. Congress. House. Committee on Appropriations. Subcommittee on Commerce, Justice, Science, and Related Agencies Publisher : ISBN 13 : Total Pages :1276 pages Book Rating :4.3/5 ( download)
Book Synopsis Commerce, Justice, Science, and Related Agencies Appropriations for 2013 by : United States. Congress. House. Committee on Appropriations. Subcommittee on Commerce, Justice, Science, and Related Agencies
Download or read book Commerce, Justice, Science, and Related Agencies Appropriations for 2013 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Commerce, Justice, Science, and Related Agencies and published by . This book was released on 2012 with total page 1276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Shapes and Dynamics of Granular Minor Planets by : Ishan Sharma
Download or read book Shapes and Dynamics of Granular Minor Planets written by Ishan Sharma and published by Springer. This book was released on 2016-11-01 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book develops a general approach that can be systematically refined to investigate the statics and dynamics of deformable solid bodies. These methods are then employed to small bodies in the Solar System. With several space missions underway and more being planned, interest in our immediate neighbourhood is growing. In this spirit, this book investigates various phenomena encountered in planetary science, including disruptions during planetary fly-bys, equilibrium shapes and stability of small rubble bodies, and spin-driven shape changes. The flexible procedure proposed here will help readers gain valuable insights into the mechanics of solar system bodies, while at the same time complementing numerical investigations. The technique itself is built upon the virial method successfully employed by Chandrasekhar (1969) to study the equilibrium shapes of spinning fluid objects. However, here Chandrasekhar’s approach is modified in order to study more complex dynamical situations and include objects of different rheologies, e.g., granular aggregates, or “rubble piles”. The book is largely self-contained, though some basic familiarity with continuum mechanics will be beneficial.
Book Synopsis Hazards Due to Comets and Asteroids by : Tom Gehrels
Download or read book Hazards Due to Comets and Asteroids written by Tom Gehrels and published by University of Arizona Press. This book was released on 2021-11-30 with total page 1317 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Our Solar System written by and published by Government Printing Office. This book was released on with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Encyclopedia of the Solar System by : Lucy-Ann McFadden
Download or read book Encyclopedia of the Solar System written by Lucy-Ann McFadden and published by Elsevier. This book was released on 2006-12-18 with total page 987 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long before Galileo published his discoveries about Jupiter, lunar craters, and the Milky Way in the Starry Messenger in 1610, people were fascinated with the planets and stars around them. That interest continues today, and scientists are making new discoveries at an astounding rate. Ancient lake beds on Mars, robotic spacecraft missions, and new definitions of planets now dominate the news. How can you take it all in? Start with the new Encyclopedia of the Solar System, Second Edition.This self-contained reference follows the trail blazed by the bestselling first edition. It provides a framework for understanding the origin and evolution of the solar system, historical discoveries, and details about planetary bodies and how they interact—and has jumped light years ahead in terms of new information and visual impact. Offering more than 50% new material, the Encyclopedia includes the latest explorations and observations, hundreds of new color digital images and illustrations, and more than 1,000 pages. It stands alone as the definitive work in this field, and will serve as a modern messenger of scientific discovery and provide a look into the future of our solar system.· Forty-seven chapters from 75+ eminent authors review fundamental topics as well as new models, theories, and discussions· Each entry is detailed and scientifically rigorous, yet accessible to undergraduate students and amateur astronomers· More than 700 full-color digital images and diagrams from current space missions and observatories amplify the chapters· Thematic chapters provide up-to-date coverage, including a discussion on the new International Astronomical Union (IAU) vote on the definition of a planet· Information is easily accessible with numerous cross-references and a full glossary and index
Book Synopsis An Introduction to the Solar System by : Neil McBride
Download or read book An Introduction to the Solar System written by Neil McBride and published by Cambridge University Press. This book was released on 2004-02-26 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by a team of experts, this textbook has been designed for introductory university courses in planetary science. It starts with a tour of the Solar System and an overview of its formation. The composition, internal structure, surface morphology and atmospheres of the terrestrial planets are then described. This leads naturally to a discussion of the giant planets and why they are compositionally different. Minor bodies are reviewed and the book concludes with a discussion of the origin of the Solar System and the evidence from meteorites. Written in an accessible style that avoids complex mathematics, and illustrated in colour throughout, this book is suitable for self-study and will appeal to amateur enthusiasts as well as undergraduate students. It contains numerous helpful learning features such as boxed summaries, student exercises with full solutions, and a glossary of terms. The book is also supported by a website hosting further teaching materials.
Book Synopsis The Asteroid Hunter by : Dante Lauretta
Download or read book The Asteroid Hunter written by Dante Lauretta and published by Grand Central Publishing. This book was released on 2024-03-19 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: A "captivating, behind-the-scenes account" of NASA’s historic OSIRIS-REx mission to return an asteroid sample and unlock the mystery of formation on life on earth braided with the remarkable life story of the mission’s leader, Dr. Dante Lauretta (Sara Seager). On September 11, 1999, humanity made a monumental discovery in the vastness of space. Scientists uncovered an asteroid of immense scientific importance—a colossal celestial entity. As massive as an aircraft carrier and towering as high as the iconic Empire State Building, this cosmic titan was later named Bennu. Remarkable for much more than its size, Bennu belonged to a rare breed of asteroids capable of revealing the essence of life itself. But just as Bennu became a beacon of promise, researchers identified a grave danger. Hurtling through space, it threatens to collide with our planet on September 24, 2182. Leading the expedition was Dr. Dante Lauretta, the Principal Investigator of NASA's audacious OSIRIS-REx Asteroid Sample Return Mission. Tasked with unraveling Bennu's mysteries, his team embarked on a daring quest to retrieve a precious sample from the asteroid's surface — one that held the potential to not only unlock the secrets of life's origins but also to avert an unprecedented catastrophe. A tale of destiny and danger, The Asteroid Hunter chronicles the high-stakes mission firsthand, narrated by Dr. Lauretta. It offers readers an intimate glimpse into the riveting exploits of the mission and Dr. Lauretta's wild, winding personal journey to Bennu and back. Peeling back the curtain on the wonders of the cosmos, this enthralling account promises a rare glimpse into the tightly woven fabric of scientific exploration, where technical precision converges with humanity’s profound curiosity and indominable spirit.
Book Synopsis The Sky is Your Laboratory by : Robert Buchheim
Download or read book The Sky is Your Laboratory written by Robert Buchheim and published by Springer Science & Business Media. This book was released on 2007-07-31 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the experienced amateur astronomer who is wondering if there is something useful, valuable, and permanent that can be done with his or her observational skills, the answer is, “Yes, there is!” This is THE book for the amateur astronomer who is ready to take the next step in his or her astronomical journey. Till now there has been no text that points curious amateur astronomers to the research possibilities open to them. At the 2006 meeting of the Society for Astronomical Sciences, participants agreed that the lack of such a text was a serious gap in the astronomical book market. This book plugs that hole.
Author :United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Space and Aeronautics Publisher : ISBN 13 : Total Pages :172 pages Book Rating :4.0/5 ( download)
Book Synopsis Near-Earth Objects (NEOS) by : United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Space and Aeronautics
Download or read book Near-Earth Objects (NEOS) written by United States. Congress. House. Committee on Science and Technology (2007). Subcommittee on Space and Aeronautics and published by . This book was released on 2008 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Planetary Sciences by : Imke de Pater
Download or read book Planetary Sciences written by Imke de Pater and published by Cambridge University Press. This book was released on 2001-12-06 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive coverage of this fascinating and expanding field at a level appropriate for graduate students and researchers.
