Link to The universe: (S3) 8- Stopping armaggedon documentary
Documentary Description
It sounds like a Hollywood blockbuster: a deadly asteroid is on a
collision course with Earth. But in reality, it's only a matter of time
before a giant space rock threatens to wipe out civilization. An
asteroid took out the dinosaurs sixty-five million years ago. Are we
next? This episode analyzes the threat and explores the many ways--from
a nuclear bomb to ingenious new technology--that experts are proposing
to stop Armageddon.