"it's not completely unusual for asteroids to be near the Earth," Gallagher said. "Our moon is about a quarter million miles ...

The seven-year mission will gather asteroid data and deploy a lander on Justitia, an asteroid found floating beyond Mars.

NASA’s Lucy mission will continue its journey to explore the Jupiter Trojan asteroids, which share Jupiter’s orbit around the ...

NASA reveals Ceres, a dwarf planet in the asteroid belt, with frozen oceans and signs of ancient hydrothermal activity, ...