Images from a 2D Spheral simulation showing the fragmentation of the Chelyabinsk bolide as it descends through the atmosphere. Credit: LLNL Planetary Defense program Images from a 2D Spheral ...

LOGAN — Shortly after first light on Feb. 15, 2013, a meteor blazed across the western Siberian sky before exploding with an estimated blast yield of up to 500 kilotons of TNT — far more powerful than ...

Peter Jenniskens and international scientists for the first time have gathered a detailed understanding of the effects on Earth from a small asteroid impact. The unprecedented data obtained as the ...

Chunks of rock fall from space all the time, some of them big enough to do a fair amount of damage. Most of the time, however, nobody’s the wiser: the vast majority of Earth’s surface is ocean, desert ...

(AP) Scientists studying the terrifying meteor that exploded without warning over a Russian city last winter say the threat of space rocks smashing into Earth is bigger than they thought. Meteors ...