Explosions of small Spacewatch objects in the Earth's atmosphere

Details Explosions of small Spacewatch objects in the Earth's atmosphere Explosions of small Spacewatch objects in the Earth's atmosphere

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993natur.363..701c&link_type=abstract

Nature (ISSN 0028-0836), vol. 363, no. 6431, p. 701-703.

Physics

25

Atmospheric Entry, Celestial Bodies, Earth Atmosphere, Earth Orbits, Hypervelocity Impact, Meteorite Collisions, Asteroids, Comets, Earth Surface

Scientific paper

It is shown here that explosions due to Spacewatch objects with diameters less than 50 m typically occur too high in the atmosphere to cause substantial surface damage. Exclusive of relatively rare iron objects, no comet or asteroid with an energy below about 2 megatons threatens the Earth's surface. The high flux of small Earth-crossing objects identified by Spacewatch therefore does not imply a greater terrestrial hazard.

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