From:http://www.spaceref.com/news/viewnews.html?id=1620
A third, and perhaps most important, reason for human asteroid missions is planetary defense: protecting the Earth from collisions with asteroids. That conjures up scenes from sci-fi movies like Armageddon and Deep Impact, but Jones notes the danger of such collisions is very real. "Our very survival as a human species depends on us being able to operate on these bodies and learn how to manipulate them," he said.
A third, and perhaps most important, reason for human asteroid missions is planetary defense: protecting the Earth from collisions with asteroids. That conjures up scenes from sci-fi movies like Armageddon and Deep Impact, but Jones notes the danger of such collisions is very real. "Our very survival as a human species depends on us being able to operate on these bodies and learn how to manipulate them," he said.
Also, Rusty Schweickart joined David Livingston on his weekly segment on the John Batchelor show to discuss planetary Defense, asteroid impacts, and Asteroid 2011AG5: John Batchelor “Hotel Mars,” Wednesday, 3-7-12 - Thespaceshow's Blog
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