00539nam a2200085Ia 4500008004100000245004200041300028800083650001300371856006900384170517s9999    xx            000 0 und d  aWhen We Left Earth: The NASA Missions  aPrepare for lift-off with this stunning, high-definition six-part series chronicling the inside story of NASA's most epic endeavors. Commemorating the space agency's 50th anniversary, follow John Glenn's Mercury mission to orbit the earth, Neil Armstrong's first historic steps on...  xScience.  uhttp://topdocumentaryfilms.com/when-we-left-earth-nasa-missions/