“Testing the James Webb Space Telescope Pathfinder” was uploaded to Flickr

In this photograph taken on Sept. 1, 2016, the James Webb Space Telescope Pathfinder structure has been configured for the Thermal Pathfinder Test at NASA Johnson Space Center's giant thermal vacuum chamber, called Chamber A. The Pathfinder is a test version of the structure that supports the telescope. via NASA ift.tt/2dufZGQ
embiggen by clicking http://flic.kr/p/LL6nEw
Testing the James Webb Space Telescope Pathfinder was taken on September 01, 2016 at 07:33AM