U.S. Government Research Reports

U.S. Government Research Reports PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 146

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Bioastronautics and the Exploration of Space

Bioastronautics and the Exploration of Space PDF Author: Theodore C. Bedwell
Publisher:
ISBN:
Category : Space biology
Languages : en
Pages : 660

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Understanding the Atom: SNAP, Nuclear Space Reactors

Understanding the Atom: SNAP, Nuclear Space Reactors PDF Author: U.S. Atomic Energy Commission
Publisher:
ISBN:
Category :
Languages : en
Pages : 52

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NASA Technical Note

NASA Technical Note PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 986

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Understanding the Atom

Understanding the Atom PDF Author: U.S. Atomic Energy Commission
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 52

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SNAP Nuclear Space Reactors

SNAP Nuclear Space Reactors PDF Author: William R. Corliss
Publisher:
ISBN:
Category : Project SNAP.
Languages : en
Pages : 52

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U.S. Government Research Reports

U.S. Government Research Reports PDF Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 154

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Proceedings

Proceedings PDF Author: Theodore Cleveland Bedwell
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 662

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Publications of Goddard Space Flight Center

Publications of Goddard Space Flight Center PDF Author: Goddard Space Flight Center
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 1048

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Defending Planet Earth

Defending Planet Earth PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309149681
Category : Science
Languages : en
Pages : 152

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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.

Publications of Goddard Space Flight Center

Publications of Goddard Space Flight Center PDF Author: Goddard Space Flight Center
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1048

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