Naked Science - Comet Mysteries

Seizoen: 2007 - Aflevering: 12 / 68 - Eerst uitgezonden: 09 augustus 2007 - Episode ID: 620838

This episode examines the chances of a comet hitting Earth again. It's happened before many times, once even wiping out the dinosaurs. How astronomers could spot new ones as they barrel through space is shown. The question remains, how could they could they stop one even if they find it?