Comets -- Collisions with Earth  

CBC | Radio-Canada Documentary Asteroid! the Doomsday Rock

Travelling at more than 10 km/s (23,000 mph), it passed Earth at a distance less than a third the distance to the moon. Had that chunk of space debris hit Moscow or London or Hong Kong instead, the devastation would have been staggering. Asteroid! The Doomsday Rock tells the story of a multi-national team of gifted scientists who believe and ...
  • 2003
  • 01:28:30
  • 9-12
  • Added on: 06/14/2013