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James Webb Space Telescope Mirror Passes Cryogenic Test

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The first mirror segment for the James Webb Space Telescope (JWST) pass its initial series of cryogenic, or super-cold, tests at Marshall Space Flight Center, Northrop Grumman Corp. [NOC] announced. JWST will be launched in 2013 to replace the Hubble Space Telescope, which is about to receive a major overhaul. That mirror segment was tested in the X-ray and Cryogenic Facility at Marshall. To give engineers the absolute certainty that the mirrors can withstand the rigors of space, they will…

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