During the product development of the James Webb Space Telescope, which innovative feature was added specifically to address a critical failure in its predecessor, the Hubble Space Telescope?

The James Webb Space Telescope (JWST) represents one of astronomy's most ambitious product development projects. This engineering marvel took decades to design, test, and deploy, pushing the boundaries of what's possible in space observation technology. This poll tests your knowledge about the product development journey of this revolutionary astronomical instrument that's now capturing unprecedented views of our universe.

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Self-testing wavefront sensing and control system
Gold-plated beryllium mirrors for infrared optimization
Five-layer sunshield to maintain cryogenic temperatures
L2 orbit positioning to avoid Earth's thermal interference