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NASA's Plan to Save Earth From Killer Asteroids | Mashable Docs
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A 2013 meteor explosion above Chelyabinsk, Russia injured more than 1700 people. It was completely unexpected -- and it could happen again. Here's what .
If there's a giant asteroid expected to hit Earth, NASA and FEMA are responsible for getting the news out. These two agencies have performed multiple .
A 2013 meteor explosion above Chelyabinsk, Russia injured more than 1700 people. It was completely unexpected -- and it could happen again. Here's what .
If there's a giant asteroid expected to hit Earth, NASA and FEMA are responsible for getting the news out. These two agencies have performed multiple .