A planetary scientist explains new research explaining the differing compositions between space rocks that hit Earth and are brought back.

Only the hardy carbon-rich asteroids make it to Earth, after surviving the Sun’s heat and the fiery burnup that occurs when ...

The OSIRIS-REx spacecraft's name has been changed to OSIRIS-APEX for its new mission to asteroid Apophis. See its journey to the asteroid in this orbit animation. Credit: NASA's Scientific ...