When it comes to visiting asteroids, NASA doesn't pick run-of-the-mill space rocks. The target of NASA's latest asteroid mission is not only thought to be rich in the building blocks of life, it also has a chance ? although a remote one ? of threatening Earth in the year 2182.
Full story at http://www.msnbc.msn.com/id/43204640/ns/technology_and_science-space/
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