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NASA unveils the James Webb Space Telescope's golden mirror

Overhead view taken on April 27, 2016, looking down on the golden James Webb Space Telescope, with its secondary mirror booms stowed. This is the position the secondary mirror will be in during launch. Preparations are being done to rotate the telescope in order to install the flight instrument module behind the primary mirror. JWST's mirrors are covered in a microscopically thin layer of gold, which optimizes them for reflecting infrared light, which is the primary wavelength of light this telescope will observe. NASA Photo by Chris Gunn/UPI

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