52. Space Shuttle Columbia

Combination rocket, spacecraft, and airplane, the space shuttle is the most complex vehicle ever built. Long before it ever flew, the shuttle was nearly scuttled due to political pressures, technological challenges, and cost overruns. The program not only overcame these challenges, but opened space to an international community of scientists, explorers, and dreamers. This is the story of the Columbia, the first shuttle to fly outer space, from inception to tragic demise in January 2003.