About 66 million years ago, a city-sized asteroid struck Earth, creating a 100-mile-wide crater in Mexico and causing the ...
A Nasa spacecraft will fly by Earth on Sunday and drop off what is expected to be at least a cupful of rubble it grabbed from the asteroid Bennu, closing out a seven-year quest. The sample capsule ...
Earth will temporarily get a second moon next week when a tiny asteroid begins its two month orbit around the planet, though ...