Release Date

12 Sep, 2011

Runtime

01:30: (HH:MM)

Synopsis

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.

Photos

×

Actors

James Lurie

Seth Shostak

Nick Pope

Brian De Toy

Stephen Hawking

Paul Springer

Travis Taylor

Bob Boan

Michael Michaud

Paul Parsons

John Ringo

Mark Moffett

Dirk Schulze-Makuch

Neil Strauss

Kevin Reeve

Quay Terry

Bill Brown

Elise Cantu

Carin Chea

Zee Cruise

Leandro DiMonriva

Crew