How did you spend your week? NASA pretended to crash an asteroid into Earth.



More than a year into a very real crisis, experts gathered virtually to confront a second emergency, a potential asteroid impact — but this disaster, fortunately, was entirely hypothetical.

Every two years, as part of the International Academy of Astronautics’ Planetary Defense Conference, scientists and emergency response personnel gather to discuss a made-up asteroid threat from discovery to impact. During this year’s exercise, which unfolded online from April 26 to April 28, the scenario presented an impact just six months away, a pointed reminder that limited lead time is a key weakness in our asteroid defense systems.



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