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2011 ag5

Apollo Astronaut Puts Spotlight On Looming Asteroid Risk

Posted 03.13.2012 | Science

By: Leonard David Published: 03/12/2012 06:09 PM EDT on A massive asteroid that may be on a collision course with Earth should be stud...

What NASA Says About Risk Of Asteroid Impact

Posted 03.06.2012 | Science

By: Staff Published: 03/05/2012 08:25 PM EST on An asteroid discovered last year has been gaining notoriety because of a cha...