Overview
What if an extra-terrestrial force attacked Earth? What might that look like and how will the people of Earth respond? Consulting a cast of world-renowned scientists, survival experts and defense experts, National Geographic explores this frightening scenario. Experts reveal what could motivate alien invaders to attack Earth, and speculate on how the attack might play out, the strategy alien invaders might use, and the most effective ways for humans to respond.
Cast
- James Lurie as Narrator (voice)
- Seth Shostak as Self - SETI Institute
- Nick Pope as Self - U.K. Ministry of Defense
- Brian De Toy as Self - Director of Defense Studies, West Point
- Stephen Hawking as Self - Theoretical Physicist (archive footage)
- Paul Springer as Self - USAF Air Command and Staff College
- Travis Taylor as Self - Physicist & Author
- Bob Boan as Self - Co-Author, Alien Invasion: How to Defend Earth
- Michael Michaud as Self - Author, Contact with Alien Civilizations
- Paul Parsons as Self