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Asteroid Incoming!

As Earth braces for a record-breaking close shave, scientists prepare for a real-life "Deep Impact."
02/15/2013

Transcript for Asteroid Incoming!

A Joseph asteroid is barreling towards -- eight times faster than a speeding bullet passing closer to lessen the satellites that broadcast is very program. But were still on a crash course here's... See More
This transcript has been automatically generated and may not be 100% accurate.
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