Aerospace Giant Building a Gravity Tractor to Deflect Killer Asteroids | Popular Science

Aerospace Giant Building a Gravity Tractor to Deflect Killer Asteroids | Popular Science

NASA astronauts Edward Lu and Stanley Love first proposed using a robotic spacecraft to nudge space rocks away from Earth using the gentle force of gravity a few years ago. Now a European aerospace giant has begun seriously investigating the concept.

(In case you wondered what good it would do to track these objects.)