Loading the player...

# Use Youtube player (with Youtube AD) #<<<>>> # Use our player (Downlaod, Unblock & No Youtube AD) 再生できないときはここをクリック　click here if failed to load 如无法播放请点击这里#

INFO:
The first hazard of a human mission to Mars is also the most difficult to visualize because, well, space radiation is invisible to the human eye.
Hazard: Space Radiation - NASA