Mitigation of Hazardous Comets and Asteroids

Michael J. S. Belton, Thomas H. Morgan

414 pages, parution le 10/11/2004

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Résumé

It is known that large asteroids and comets can collide with the Earth with severe consequences. Although the chances of a collision in a person's lifetime are small, collisions are a random process and could occur at any time. This book collects the latest thoughts and ideas of scientists concerned with mitigating the threat of hazardous asteroids and comets. It reviews current knowledge of the population of potential colliders, including their numbers, locations, orbits, and how warning times might be improved. The structural properties and composition of their interiors and surfaces are reviewed, and their orbital response to the application of pulses of energy is discussed. Difficulties of operating in space near, or on the surface of, very low mass objects are examined. The book concludes with a discussion of the problems faced in communicating the nature of the impact hazard to the public.

L'auteur - Michael J. S. Belton

MICHAEL BELTON is Emeritus Astronomer at the National Optical Astronomy Observatory, Tucson, Arizona, and President of Belton Space Exploration Initiatives, LLC.

L'auteur - Thomas H. Morgan

THOMAS MORGAN is a Discipline Scientist in the Office of Space Science at the National Aeronautics and Space Administration, Washington, District of Columbia.

Sommaire

Recent progress in interpreting the nature of the near-Earth object population
Earth impactors: orbital characteristics and warning times
The role of radar in predicting and preventing asteroid and comet collisions with Earth
Interior structures for asteroids and cometary nuclei
What we know and don't know about surfaces of potentially hazardous small bodies
About deflecting asteroids and comets
Scientific requirements for understanding the near-Earth asteroid population
Physical properties of comets and asteroids inferred from fireball observations
Mitigation technologies and their requirements
Peering inside near-Earth objects with radio tomography
Seismological investigation of asteroid and comet interiors
Lander and penetrator science for near-Earth object mitigation studies
Optimal interception and deflection of Earth-approaching asteroids using low-thrust electric propulsion
Close proximity operations at small bodies: orbiting, hovering, and hopping
Mission operations in low-gravity regolith and dust
Impacts and the public: communicating the nature of the impact hazard
Towards a national program to remove the threat of hazardous NEOs

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	PAPIER
Éditeur(s)	Cambridge University Press
Auteur(s)	Michael J. S. Belton, Thomas H. Morgan
Parution	10/11/2004
Nb. de pages	414
Format	17,5 x 25,5
Couverture	Relié
Poids	1040g
Intérieur	Noir et Blanc
EAN13	9780521827645
ISBN13	978-0-521-82764-5