Near-earth asteroids provide a unique opportunity to test the new technologies and capabilities we need for future human missions to Mars, NASA has said.
Researchers have successfully completed a first series of field tests aimed at investigating how humans will explore and work on near-Earth asteroids (NEAs) and eventually the two moons of Mars, Phobos and Deimos.
Day in Pics: 23rd November
Showbiz World - November 22, 2014
Los Angeles Auto Show