Saturday, July 01, 2006
Gravity Tractor
How to lasso wayward asteroids.
By David Chandler
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| The gravitational tug of B612's proposed craft might deflect an asteroid. (Courtesy of Dan Durda-FIAAA/B612 Foundation.) |
Sooner or later, say astronomers, an asteroid will be discovered on a collision course with Earth. Humanity will then begin all-out planning to prevent an impact. But while there are already plenty of ideas about how to shove asteroids out of Earth's way, nobody knows whether any of them would work.
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Massachusetts Institute of Technology