ATLAS应该可以提前数天发现一块沿着撞击轨道运行的岩石,争取足够的时间组织快速疏散。
Of course, rather than evacuating the impact zone, it would be better if there were someway to deal with a threatening asteroid more directly, by nudging it into a different orbit.
当然,比起疏散撞击区域,找到一个更直接应对小行星威胁的方法会更好,比如把小行星推入不同轨道。
Asteroid deflection suffers from a even greater giggle factor than asteroid detection, butseveral ideas have been proposed. One popular method is to use nuclear weapons.
让小行星偏向的想法比小行星探测更会招致哄笑,但已经有人提出了一些主意。
Detonating a nuke near an asteroid s surface could boil away some of the rock and-byNewton s third law of motion-impart a shove in the other direction.
一个通俗的方法是使用核武器。在小行星表面附近引爆一枚核弹可以蒸发掉一些岩石质量。根据牛顿第三运动定律,还会在其他方向产生作用力。
Done early enough, this would shift the object s orbit sufficiently to stop it hitting Earth.
如果爆炸时间足够提前,这足已改变小行星的轨道,防止与地球的撞击。(当然这毫无意义,只是纯粹在卖弄学问罢了。
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