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Massive Terrestrial Strike
Massive Terrestrial Strike (click to enlarge)
 
 

Massive Terrestrial Strike

Artist's concept of a catastrophic asteroid impact with the early Earth. An impact with a 500-km-diameter asteroid would effectively sterilize the planet. The Earth may have experienced such gigantic impacts in its youth, but fortunately today there are no projectiles this large to threaten our planet.

Image Credit: Don Davis, NASA

Credit: NASA Ames Research Center



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Last Updated: 20 Jan 2011