One of the most complex instruments ever built, the Hubble Space Telescope is expected to transform our understanding of the Universe. But once it is in orbit NASA discovers a serious problem, a defective main mirror. NASA sends a team of astronauts to fix the problem in its greatest and highest profile mission since the Apollo era. It gives NASA the confidence to begin construction on the International Space Station.
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Ready to Watch When We Left Earth The NASA Missions, Season 1, Episode 6?