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110 2 a| National Research Council (U.S.).b| Committee to Review Near-Earth-Object Surveys and Hazard Mitigation Strategies.?| UNAUTHORIZED;

245 10 a| Defending planet Earthh| [electronic resource] :b| near-Earth-object surveys and hazard mitigation strategies /c| Committee to Review Near-Earth-Object Surveys and Hazard Mitigation Strategies ; Space Studies Board ; Aeronautics and Space Engineering Board, Division on Engineering and Physical Sciences, National Research Council of the National Academies.;

260 a| Washington, D.C. :b| National Academies Press,;

300 a| xvii, 134 p. :b| ill. (chiefly col.) ;c| 28 cm.;

504 a| Includes bibliographical references.;

506 a| Available only to authorized users.;

520 a| "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."--Publisher's description.;

530 a| Also available in Open Book format via the National Academies Press home page.;

538 a| Mode of access: World Wide Web;

650 0 a| Near-Earth objects.=| ^A1133293;

650 0 a| Asteroidsx| Collisions with Earth.=| ^A425619;

650 0 a| Cometsx| Collisions with Earth.=| ^A425620;

655 0 a| Electronic books.=| ^A491897;

710 2 a| National Research Council (U.S.).b| Space Studies Board.=| ^A477380;

710 2 a| National Research Council (U.S.).b| Aeronautics and Space Engineering Board.=| ^A476980;

856 40 z| Full text available from Ebook Central - Academic Completeu| https://ebookcentral.proquest.com/lib/eastcarolina/detail.action?docID=3378638;

947 a| (OCoLC)ocn520515455;

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Defending planet Earth near-Earth-object surveys and hazard mitigation strategies / Committee to Review Near-Earth-Object Surveys and Hazard Mitigation Strategies ; Space Studies Board ; Aeronautics and Space Engineering Board, Division on Engineering and Physical Sciences, National Research Council of the National Academies.

Author/creator	National Research Council (U.S.).
Other author	National Research Council (U.S.). Space Studies Board.
Other author	National Research Council (U.S.). Aeronautics and Space Engineering Board.
Format	Electronic
Publication Info	Washington, D.C. : National Academies Press,
Description	xvii, 134 p. : ill. (chiefly col.) ; 28 cm.
Supplemental Content	Full text available from Ebook Central - Academic Complete
Subjects	Near-Earth objects. Asteroids--Collisions with Earth. Comets--Collisions with Earth.

Abstract	"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."--Publisher's description.
Bibliography note	Includes bibliographical references.
Access restriction	Available only to authorized users.
Other forms	Also available in Open Book format via the National Academies Press home page.
Technical details	Mode of access: World Wide Web
Genre/form	Electronic books.
LCCN	2010283484
ISBN	0309149681
ISBN	9780309149686

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