"Scientifically there's a huge amount we can learn from asteroids," says Alan Fitzsimmons, an astronomer at Queens University ...

Could a giant planet between Mars and Jupiter have doomed Earth? A new study suggests that small changes would have been ...

The space rock, which measures 150 feet across and is traveling at 38,922 miles per hour, is one of five on NASA's radar.

These studies show that Mars is bombarded by meteorites far more often than previously thought — about 2.5 times more ...

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NASA is monitoring three aircraft-sized asteroids that will zoom past the Earth later today at around 19,000 to 22,200 miles per hour.