Asteroid Bennu was expected to be relatively smooth and easy to sample. When OSIRIS-REx arrived, it found a surface covered ...

The interstellar comet will pass safely by Earth, giving astronomers their best chance to study it up close.

On Dec. 13, 2012, a Chinese spacecraft flew by the asteroid Toutatis. [‘On This Day in Space’ Video Series on Space.com] ...

DARMSTADT, Germany -- Europe's comet lander Philae has come to rest in the shadow of a cliff, posing a potential problem for its solar panels, scientists said Thursday as they published the first ...