How Is The World Going To End?: Planetary Devastation 

In the near future the earth will be hit by a huge speeding asteroid. The impact will cause the planet to crack then explode.
 
 The World's strongest power will try to hit the asteroid to try to save mankind.The world thinks that The United States Of America and Russia have the most powerful missiles to destroy it.

The Speed of the asteroid may to the factor that makes it impossible to destroy the asteroid. The force can cause the asteroid to hit and go through the Earth. This will then cause the Earth to explode.