When We Left Earth: The NASA Missions S01E06 - Home In Space

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 primary mirror. NASA sends a team of astronauts to fix the problem in its most important and highest-profile mission since the Apollo era. It gives NASA the confidence to begin construction on the International Space Station, paving the way back to the Moon and onto Mars.