Asteroid program on national geographic channel

[newtonian]

National Geographic channel (DirecTV channel 276) 2004, Naked Science, B-162 project to prevent a giant asteroid from slamming into earth.<br /><br />Mission deep impact - impact of 23,000 mph.<br /><br />Over a trillion comets <br /><br />150,000 mph collision with earth possible.<br /><br />3 types of asteroids<br /><br />1. one solid rock - monolith<br />2. two rocks together - binary<br />3. a conglomeration of many rocks<br /><br />Airiing now