Global Perspectives

Deep Space Dangers: Is Mars Beyond Reach?

Season 2013 Episode 150 | 24m 46s | Video has closed captioning.

The former head of NASA's Space and Life Sciences Directorate, astronaut and physician Dave Williams, on the little known dangers of deep space travel, and what that might mean for the space program.

Aired: 11/10/13

Rating: NR

Problems Playing Video? | Closed Captioning