NASA bets on asteroid mission as best path to Mars
Some scientists question whether redirect plan would get humans any closer to Red Planet
![illustration of astronaut sampling an asteroid](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/08/asteriod_opener.jpg?fit=860%2C460&ssl=1)
ROCKY ROAD TO MARS NASA has billed its Asteroid Redirect Mission as a stepping stone to Mars. In one mission concept, illustrated here, an astronaut collects a sample from a bagged asteroid orbiting the moon.
NASA