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

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.

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