Abstract
One means of countering a hazardous asteroid is discussed: destruction of the object using a nuclear charge. Explosion of such an asteroid shortly before its predicted collision would have catastrophic consequences, with numerous highly radioactive fragments falling onto the Earth. The possibility of exploding the asteroid several years before its impact is also considered. Such an approach is made feasible because the vast majority of hazardous objects pass by the Earth several times before colliding with it. Computations show that, in the 10 years following the explosion, only a negligible number of fragments fall onto the Earth, whose radioactivity has substantially reduced during this time. In most cases, none of these fragments collides with the Earth. Thus, this proposed method for eliminating a threat from space is reasonable in at least two cases: when it is not possible to undergo a soft removal of the object from the collisional path, and to destroy objects that are continually returning to near-Earth space and require multiple removals from hazardous orbits.
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Original Russian Text © A.G. Aleksandrova, T.Yu. Galushina, A.B. Prishchepenko, K.V. Kholshevnikov, V.M. Chechetkin, 2016, published in Astronomicheskii Zhurnal, 2016, Vol. 93, No. 6, pp. 595–602.
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Aleksandrova, A.G., Galushina, T.Y., Prishchepenko, A.B. et al. The preventive destruction of a hazardous asteroid. Astron. Rep. 60, 611–619 (2016). https://doi.org/10.1134/S1063772916040016
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DOI: https://doi.org/10.1134/S1063772916040016