How to avoid giant flying rocks
(and the movie)
First do not watch the movie. Well the movie it self is not bad its actually quite good. The whole premise of protecting the Earth is flawed because the asteroid would still hit the Earth. Now the real plan NASA has is suppose to work. The current plan is to launch nuclear warheads at the asteroid to gradually deflect it away from Earth. The nukes would detonate off the surface because if it actually hit the surface of the asteroid it would cause unwanted debris that would rain upon Earth. In the case of an asteroid we have a chance of preventing Armageddon.