Observations
Asteroid Hunter Gives an Update on the Threat of Near-Earth Objects
January 22nd, 2013 |
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An Earth impact by a large comet or asteroid could knock out human civilization with a single blow, as most people are now aware thanks to recent Hollywood movies and public outreach by planetary scientists. Since 1998, when NASA initiated its Spaceguard program to find comets and asteroids 1 km in diameter and larger, researchers [...]
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