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The asteroid that could have wiped out Washington

The asteroid that could have wiped out Washington

Feb. 14, 2013
An asteroid the size of an office building will narrowly miss Earth, but it’s just one of millions out there. The Post’s Brian Vastag stops by to tell us about the “giant cosmic shooting gallery” in which our planet sits and what scientists are doing to protect us.
The Fold/ The Washington Post
Correction: Clarification:

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