Scientists hope its discovery will help determine the risks of further potentially catastrophic impacts.

科学家们希望此次的发现能够帮助人们预防外来天体毁灭性地撞击。

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Similarly, there are myriad ways that planets can lose their atmospheres, through stripping by the solar wind, baking by the sun's radiation or catastrophic impacts by comets or asteroids.

同样的，星球也有无数的方法能够丧失自己的大气层，有可能被太阳风夺走，还有可能被太阳的放射性物质或者来自彗星和小行星灾难性的撞击耗尽。

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Even without such specific documentation, it is clear that impacts of this size do occur and that their results can be catastrophic.

即使没有这样具体的记录，这种规模的影响也很明显是确实会发生的，而其结果可能是灾难性的。

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Investors, too, demand quarterly performance and generally fail to examine how companies are preparing to manage climate and other environmental risks or even to exploit promising opportunities in clean energy innovation that are our best defense against catastrophic climate change impacts.

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In 1982, Sandia National Laboratories simulated the impacts of a catastrophic accident at nuclear power plants on the surrounding environment for the Nuclear Regulatory Commission.

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But if it were to happen the impacts would be catastrophic.

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