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NASA’s James Webb Space Telescope unfolds its giant mirror for last time ahead of Oct. 31 launch – Space.com

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NASA’s James Webb Space Telescope has unfurled its big golden mirror for the final time on Earth ahead of its planned launch later this year.
The $9.8 billion Webb, which is billed as the successor to NASA’s iconic Hubble Space Telescope, opened its 21.3-foot-wide (6.5 meters) primary mirror recently during a test at the Los Angeles-area facilities of its main builder, the aerospace giant Northrop Grumman.
The mirror, which is composed of 18 hexagonal segments, is too wide to fit inside the payload…

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