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Books > Science & Mathematics > Astronomy, space & time > Solar system
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Hazards Due to Comets and Asteroids (Paperback, New)
Loot Price: R2,277
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Hazards Due to Comets and Asteroids (Paperback, New)
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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.
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