Which critical product development step did the James Webb Space Telescope undergo that delayed its launch but ultimately improved its performance by over 100x?

The development of astronomical instruments and telescopes represents one of humanity's greatest technological achievements. These sophisticated products require years of research, testing, and innovation before they can unlock the mysteries of the universe. This poll explores a fascinating aspect of how major astronomical instruments move from concept to reality. Test your knowledge about the product development journey of these cosmic tools!

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

Complete redesign of its primary mirror segments after a manufacturing flaw was discovered
Implementation of a five-layer sunshield instead of the originally planned three layers
Cryogenic testing at -233°C to ensure its infrared sensors could function in deep space
Addition of gold coating to the mirrors after initial aluminum coating proved insufficient