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- W71006334 abstract "In the present paper, we consider ways-and-means of dealing with Earthstrikes of micro-asteroids, bodies which are so small --- and so numerous --- that they strike the Earth every century to every year. These are time-scales so brief that they are of interest to contemporary human individuals and institutions. We are particularly concerned with not only the detection and disposal of cosmic objects which threaten to bombard the Earth, but with practical questions such as cost-to-benefit ratios and implementing means for planetary defenses which are at once near-term, robust and unquestionably acceptable. In the sections which follow, we briefly review those aspects of the cosmic bombardment of the Earth which are of concern during the next several decades. We first take note of the frequency with which the Earth will be struck by asteroids of various sizes and note the corresponding physical damage levels. Then, we translate this into economic damage levels, so as to arrive at the denominator of the cost-benefit ratio of a shield against such bombardment. Next, we consider how such a shield might be realized, emphasizing minimization of its total operating cost (amortization plus operation-and-maintenance) while providing the required reliability. Having developed a cost estimate, wemore » then discuss the cost-benefit ratio of defending humans and their works on this planet from cosmic bombardment.« less" @default.
- W71006334 created "2016-06-24" @default.
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- W71006334 date "1990-05-01" @default.
- W71006334 modified "2023-09-27" @default.
- W71006334 title "Cosmic bombardment II: Intercepting the bomblets cost-efficiently" @default.
- W71006334 doi "https://doi.org/10.2172/7189016" @default.
- W71006334 hasPublicationYear "1990" @default.
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