How much energy does it take to actually destroy an asteroid and break it into pieces?
Smacking an asteroid with a bomb or a smaller asteroid should shatter it into manageable pieces, right? Wrong, a new study shows — this picture isn't likely after a minor collision. You’ve likely heard by now that the moviegot it all wrong — it’s just not feasible to blow up an asteroid heading toward Earth with a bomb or few.
“Our question was, how much energy does it take to actually destroy an asteroid and break it into pieces?” El Mir said in aThe answer to that question, it turns out, is “that asteroids are stronger than we used to think and require more energy to be completely shattered,” he said.The simulations run by El Mir and his team let them study the aftermath of an asteroid collision via a “hybrid” approach that focuses on two different stages of a hit using two different types of computer code.
Would an asteroid shatter on impact? And what would happen to those pieces over time? Would they fly apart, or would they come back together to re-form the asteroid, nullifying the effects of the impact? The results differ significantly from previous studies in the early 2000s, whose code simulated a collision between an identical pair. In that study, the larger body was completely destroyed. But the older code, the researchers say, was not able to take into account the smaller-scale processes occurring on the asteroid during the initial collision.
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