When first launched in 1990, which major space telescope had a serious flaw in its primary mirror that initially produced blurry images, requiring a complex repair mission?

Product failures can sometimes lead to remarkable innovations. In the world of astronomy, one particular telescope's initial design flaw became legendary in the scientific community, eventually transforming our view of the cosmos after a dramatic rescue mission. This poll tests your knowledge about one of the most famous product recovery stories in scientific history—a case study in how organizations can turn potential disasters into triumph.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Hubble Space Telescope
Spitzer Space Telescope
Chandra X-ray Observatory
James Webb Space Telescope