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Avoiding collisions: the Spaceguard Foundation

机译:避免碰撞:太空卫士基金会

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摘要

The Earth has a long and violent history of collisions with extraterrestrial bodies such as asteroids and comet nuclei. Several of these impacts have been large enough to produce major environmental changes, causing mass extinctions and severe alterations to weather patterns and geography. There is no reason to suppose that the likelihood of such collisions will be any less in the future and the spread of human settlement, civilisation, and particularly urbanisation, makes it much more likely that a future impact, even relatively small, could result in the massive loss of human life and property.
机译:地球与小行星和彗核等地球外物体发生碰撞的历史悠久而猛烈。这些影响中的几个影响已经足够大到足以引起重大的环境变化,从而导致大规模灭绝,并严重改变了天气模式和地理。没有理由认为未来发生此类冲突的可能性会越来越小,而人类住区,文明尤其是城市化的蔓延使得未来的影响(即使规模相对较小)更有可能导致这种冲突。大量的生命和财产损失。

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