Space Dangers
Clip: Season 5 Episode 1 | 13m 19s | Video has closed captioning.
Can we protect Mars-bound astronauts from deadly meteoroids, radiation, and other hazards?
Aired: 01/19/11
The full episode is no longer available for online streaming. Why?
Please continue to enjoy extra(s) from this episode. The full episode is still available for purchase through the "Buy Now" links.
