NASA: Triumph and Tragedy在线观看全集免费高清

In 2009, NASA celebrates the 40th anniversary of the first moon landing. This documentary series offers audiences a unique chance to glimpse an astronaut's view of space flight. It is an epic story of heroes and their breathtaking successes as they further humanity's innate desire to explore. 　　To land a human being on another celestial body is the first step to living beyond our...