In 50 years of space exploration, a few brave men and women have taken extreme risks to help mankind expand its pool of knowledge. The crew of the space shuttle Endeavour undertook one such hazardous mission to fix a defect in the Hubble space telescope. Here, Discovery Channel re-creates the scenes that led to one of the most complex and dangerous space walks of all time. The result? The repaired telescope has allowed us to penetrate deeper than ever into the universe.

Discovery, Channel 13