'Gravity tractor' to deflect Earth-bound asteroids
Zeeya Merali writes in NewScientist:
NASA scientists have come up with a surprisingly simple yet effective way to deflect an Earth-bound asteroid – park a large spacecraft close by and let gravity do the work.
Previous suggestions have focused on deflecting an incoming asteroid with nuclear explosions. But NASA experts believe a "gravity tractor" should be able to perform the same feat by creating an invisible towline to tug the rock off its deadly course.
posted by Fergie @ 11/09/2005 10:19:00 AM
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