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Engineers inspect the James Webb Space Telescope’s ‘pathfinder telescope’ after its second super-cold optical test in Chamber A at NASA’s Johnson Space Center. Credit: NASA/ Chris Gunn Recently, the James Webb Space Telescope’s “pathfinder telescope,” or “Pathfinder” completed its second super-cold optical test that resulted in the first checkout of specialized optical test equipment designed […]
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James Webb ‘Pathfinder Telescope’ successfully completes second super-cold optical test
December 1st, 2015 
Awake Goy 
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