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Deflecting an asteroid, with paintballs

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Published on Oct 26, 2012

In the event that a giant asteroid is headed toward Earth, you'd better hope that it's blindingly white. A brightly colored asteroid would reflect sunlight — and over time, this bouncing of photons off its surface could create enough of a force to push the asteroid off its course.

How might one encourage such a deflection? The answer, according to an MIT graduate student: with a volley or two of space-launched paintballs.

Read more at MIT News: http://web.mit.edu/newsoffice/2012/de...

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