‘Asteroid Day’ is a good time to learn about the threat of space rocks

On June 30th, 1908, more than 770 square miles of remote Russian forest were obliterated from the face of the Earth when a relatively small meteor, estimated at only around 400 feet across, unleashed 15 megatons of energy above the Stony Tunguska Riv...

Cosmic Collision sent Chelyabinsk Asteroid Towards Earth


The Chelyabinsk meteor that exploded over Russia smashed through Earth’s atmosphere on the rebound from a collision with another asteroid in space. Researchers from Tohoku University in Japan have...