It measures 130 to 300 feet across, a pebble compared to the asteroid that killed the dinosaurs, which is estimated to have been six to nine miles in length. On the other hand, on Feb. 15, 2013, an ...

This is not a drill. There is a chance - albeit a small one - that an asteroid could hit planet Earth within the next decade.

An incredible simulation has shown exactly what would happen if a 'city killer' asteroid was to hit Earth. That's right, a ...