Which market research approach led NASA to significantly redesign the James Webb Space Telescope's sunshield in 2018, delaying the project but ultimately ensuring mission success?

The James Webb Space Telescope represents one of astronomy's most ambitious projects, but its path from concept to launch was filled with challenges. This poll tests your knowledge about the market research and development process that shaped this revolutionary observatory. How well do you understand the business decisions behind astronomy's most advanced eye in the sky?

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Focus groups with amateur astronomers revealed concerns about the original design's heat dissipation capabilities
Extensive environmental testing showed that the sunshield could tear during deployment when exposed to space conditions
Customer surveys indicated astronomers preferred a larger sunshield area over faster deployment mechanisms
Competitive analysis of ESA's telescope designs prompted NASA to adopt a completely different material composition