New research suggests space rocks are remarkably hard to shatter. - NBCNewsMACH
, one potential recourse would be to smash the looming space rock into pieces — but new research suggests that that approach may be less likely to succeed than people hope.wouldn't break apart as drastically as previous models suggested, and that in the aftermath of the attempted destruction, the asteroid's gravity would be strong enough to pull the fragments back together.
"It may sound like science fiction but a great deal of research considers asteroid collisions," lead author Charles El Mir, a recent doctoral graduate at Johns Hopkins University,."For example, if there's an asteroid coming at Earth, are we better off breaking it into small pieces, or nudging it to go a different direction? And if the latter, how much force should we hit it with to move it away without causing it to break? These are actual questions under consideration.
Answering those questions, unsurprisingly, would be easier if we knew more about asteroids — the authors wrote that even when it comes to asteroids that scientists have density estimates for, they typically aren't sure what theirThe results bode well for asteroids, at least."We used to believe that the larger the object, the more easily it would break, because bigger objects are more likely to have flaws," El Mir said.
Of course, asteroids aren't just potential threats — they also intrigue scientists because they are leftover rubble from the formation of the solar system, and some hope that they could become resources for companies seeking to mine their water and metals.
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