地球浩劫4.0

After a collision with a comet, a nearly 8km wide piece of the asteroid Orpheus is heading towards Earth. If it will hit it will cause a incredible catastrophe which will probably extinguish mankind. To stop the meteor NASA wants to use the illegal nuclear weapon satellite Hercules but discovers soon that it doesn't have enough fire power. Their only chance to save the world is to join forces with the USSR who have also launched such an illegal satellite. But will both governments agree