Primary Mirror Of NASA’s James Webb Space Telescope Finally Completed

Space





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A robotic arm was used to install each of the 18 segments. NASA/Chris Gunn

It is several years behind schedule and billions of dollars over budget, but there is finally light at the end of the tunnel for NASA’s James Webb Space Telescope (JWST). The primary mirror of the giant space telescope is now complete – a significant step towards launching in 2018.