Armageddon

A series of asteroids are on a collision course with the Earth, and it's up to a team of crack demolition experts to blow up the biggest rock with a thermonuclear weapon. But to do that, they'll need to be given another crash-course: they are all oil digger employees with no space training whatsoever. If they don't reach the asteroid in time, or they're not prepared for the mission, millions of people will perish.