Assessing the Threat of Asteroid Impacts on Earth - Kevin Walsh, Southwest Research Insitute from dinosaur 2000 Watch Video
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⏲ Duration: 11 min 80 sec ✓ Published: 22-Nov-2013
Description: Where do near-Earth Asteroids come from?nKevin Walsh, Southwest Research InsitutennNear-¬Earth Objects (NEOs) are a transient population with lifetimes only a small fraction of the Solar System lifetime. We know the NEO's exit routes -¬chaotic orbits put them on a collision course with a planet or the Sun, while Jupiter can provide a one-¬way ticket out of the Solar System. Meanwhile, the size of the NEO population hasn't changed much over time (as determined by the cratering record on the Mo
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