5of5-Mars Rising-Part03-Staying Alive

ALL 5 Parts of Mars Rising-Part03-Staying Alive, http://www.youtube.com/view_play_list... Preparing and protecting the crew from the deadly hazards of the journey to Mars will be critical to a successful mission. Viewers see firsthand how NASA and Russia are addressing the physiological challenges of extreme radiation and long-duration weightlessness, as well as the challenges of food supplies and astronaut communication with Earth.