 FACT: In the very end of the movie, the credits roll over a shot of  the planet Earth in space. However, upon close inspection, the  planet is rotating in entirely the wrong direction, East to West.  Earth, along with most of the other major bodies in the solar  system, rotates West to East. It would take a second object of great  mass coming into close proximity of the planet to change its  rotation, not a handful of nukes in the core.