How to stop a Meteorite
A meteor is in the sky , a meteorite has already landed on the the surface, an asteroid is bigger than 1km in diameter. A shooting star is essentially a a meteor breaking up in the atmosphere.
This interesting website from the ever excellent Boston Globe has a great range of technologies that we humans could employ to divert a potentially catastrophic meteor impact event.
Remember that one theory states that the dinosaurs were probably wiped out by the impact of an asteroid in the Caribbean just of the coast of Mexico. The Chicxulub crater off the Yucatan peninsula is the supposed location of the impact site. Recent debate seems to question this theory however as reported here.