Feb. 14, 2013: For eons, Earth has felt the tremors of asteroids striking our planet. From the extinction of the dinosaurs 65 million years ago to the felled forests around Tunguska in 1908, the space rocks keep coming.
This week, Earth strikes back. When asteroid 2014 DA14 makes a record close approach to our planet on Feb. 15th, the space rock could be the one feeling tremors.

