Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.

Asteroids that orbit close to the Earth inevitably cause us some anxiety due to the even remote possibility of a collision. But their proximity also offers ample opportunities to learn more about the ...

Scientists believe they’re the leftovers from the solar system’s formation 4.6 billion ... that this region is known as the main asteroid belt. They sometimes get pushed out of the belt ...