Which innovative technology was specifically developed for the James Webb Space Telescope that represented a critical product breakthrough not used in previous space telescopes?

The James Webb Space Telescope (JWST) represents one of the most significant product innovations in modern astronomy, revolutionizing how we observe the universe. This engineering marvel required unprecedented collaboration between space agencies and private companies, pushing the boundaries of what was technologically possible. Test your knowledge about this groundbreaking product development that has changed our understanding of deep space observation.

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The deployable sunshield made of kapton layers that can unfold in space to the size of a tennis court
Rocket propulsion system using ion thrusters for precise positioning
Self-healing composite materials that can repair micrometeoroid damage
Artificial intelligence system for autonomous target selection and imaging