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http://www.popularmechanics.com/space/a17822/the-asteroid-hunters/
It's unlikely that a gigantic space rock will arrive unexpectedly and destroy civilization as we know it. But it's not impossible. Which is why a small but growing community of scientists and astronomers are scrambling to spot and destroy dangerous asteroids long before they hit us.
It's unlikely that a gigantic space rock will arrive unexpectedly and destroy civilization as we know it. But it's not impossible. Which is why a small but growing community of scientists and astronomers are scrambling to spot and destroy dangerous asteroids long before they hit us.
NASA seeks help to save Earth from killer asteroids
NASA seeks help to save Earth from killer asteroids
Asteroid: Doomsday or Payday? — NOVA | PBS
Will future asteroids trigger massive extinctions—or be mined for precious minerals?
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