From Mercury to Gemini, from Apollo to Curiosity, NASA's giant leaps in engineering and science over the last 60 years have been nothing short of astronomical. Blast off on a celestial voyage as we explore the first half-century of the Space Age. Celebrate the triumphs, lament the tragedies, and learn how modern engineers are using the past as a blueprint, refining yesterday's technologies in hopes of sending humans off to Mars and beyond. (Source: Smithsonian Channel) Currently 0/10