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Near-Earth object / Asteroid / Gravity tractor / Wide-field Infrared Survey Explorer / B612 Foundation / Spacecraft / Comet / NASA / Asteroid-impact avoidance / Spaceflight / Space / Planetary defense


Stopping asteroid strikes: Defenders of the Earth | The Economist
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Document Date: 2014-03-18 03:49:26

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File Size: 169,44 KB

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