Assessing the Threat of Asteroid Impacts on Earth - Kevin Walsh, Southwest Research Insitute from dinosaur 2000 Watch Video

⏲ 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