Which groundbreaking product design feature allows the James Webb Space Telescope to operate at extremely cold temperatures and observe infrared light?

The James Webb Space Telescope represents one of humanity's most ambitious product design challenges. Launched in December 2021 after decades of development, this technological marvel pushed the boundaries of engineering, optics, and materials science. Test your knowledge about the design innovations behind this remarkable instrument that's revolutionizing our understanding of the cosmos!

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Its five-layer sunshield, roughly the size of a tennis court, that keeps the telescope at approximately -233°C (-388°F)
A revolutionary liquid helium cooling system that circulates through the telescope's structure
A thermal coating made from pulverized meteorite material that naturally repels heat
An artificial magnetic field generator that deflects solar radiation away from sensitive instruments