Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cem..conf..118l&link_type=abstract
Catastrophic Events and Mass Extinctions: Impacts and Beyond, p. 118
Astronomy and Astrophysics
Astrophysics
Asteroids, Taxonomy, Mineralogy, Petrology, Impactors, Geology
Scientific paper
Besides the main-belt asteroids, which rotate around the Sun in stable orbits located between the orbits of Mars and Jupiter, there is a population of asteroids in unstable eccentric orbits which can approach and cross the Earth's orbit. This population is called 'near-Earth asteroids' (NEAs). More than 800 NEAs have been discovered to-date. They are the objects of a special interest from the point of view not only of fundamental science but of the applied science as well (NEAs as the potential sources of raw materials in the nearest to the Earth space, the problem of asteroid hazard, etc.). There is no doubt that Earth-crossing asteroids are the principal bodies who strike our planet occasionally and therefore they are a real threat to the Earth civilization. Additional information is contained in the original extended abstract.
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