NASA's next generation space telescope marks key milestone

(PhysOrg.com) -- The first six of 18 segments that will form NASA's James Webb Space Telescope's primary mirror for space observations will begin final round-the-clock cryogenic testing this week. These tests will confirm ...

First full set of Webb telescope flight mirrors begin final tests

The first six of 18 flight mirror segments for the next-generation premier space observatory, NASA's James Webb Space Telescope, are ready to begin final cryogenic tests in the X-ray and Cryogenic Facility at Marshall Space ...

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