A gigantic asteroid will fly by our planet at the end of this month, making its closest approach for at least the next two centuries on May 31. But, d...
By Alexandra Witze
Sediment in a deep-sea core may hold radioactive iron spewed by a distant supernova 2.2 million years ago and preserved in the fos...
Widespread wildfires, a red sky, and upper atmospheric temperatures reaching 2,700 degrees? That was Earth around 66 million years ago following an an...
The recent meteor strike over Chelyabinsk, Russia is reminding all of us just how vulnerable we are to attacks from above. So I reached out to Phil Pl...
MOSCOW -- Scientists have found more than 50 tiny fragments of a meteor that exploded over Russia's Ural Mountains, and preliminary tests are turning ...
As the world watches for a giant asteroid to give Earth a close shave on Feb. 15, famed science educator Bill Nye suggests now is the time to get invo...