How to Save the Earth from an Asteroid Without Blowing Anything Up
/Asteroids 10 km (~6 miles) in diameter strike the Earth every 50 to 100 million years. That puts us in the golden window of expecting another extinction-level extraterrestrial impact, though none appear likely in the near future. However, if we did spot a dangerous asteroid, there are more ways to deflect it than nuclear strikes, some of which are quite bizarre and entertaining.
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