Lucy is preparing for a close encounter with the asteroid Donaldjohanson, a key milestone before its groundbreaking journey ...

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

NASA's Lucy spacecraft has its next flyby target, the small main belt asteroid Donaldjohanson, in its sights. By blinking between images captured by Lucy on Feb. 20 and 22, this animation shows the ...

NASA's Lucy spacecraft, on its way to Jupiter's Trojan asteroids, has its next target in its sights: the main belt asteroid ... spotted the asteroid moving against a background of stars.

There are so many asteroids orbiting between Mars and Jupiter — millions of them — that this region is known as the main asteroid belt. They sometimes get pushed out of the belt and can end up ...

There are so many asteroids orbiting between Mars and Jupiter — millions of them — that this region is known as the main asteroid belt. They sometimes get pushed out of the belt and can end up ...

Anything that survives the impact is a meteorite. Where do meteorites come from? Most are from the asteroid belt, a jumble of rocks between the orbits of Mars and Jupiter. They range in size from ...