Into the Unknown
- Episode aired Nov 13, 2007
The physical toll on astronauts embarking on a three-year Mars mission, including muscle depletion and loss of bone mass in zero gravity, and damage from cosmic radiation, is examined. Willi... Read allThe physical toll on astronauts embarking on a three-year Mars mission, including muscle depletion and loss of bone mass in zero gravity, and damage from cosmic radiation, is examined. William Shatner narrates.The physical toll on astronauts embarking on a three-year Mars mission, including muscle depletion and loss of bone mass in zero gravity, and damage from cosmic radiation, is examined. William Shatner narrates.