NASA Webb Telescope Set for Testing in Space Simulation Chamber

NASA’s James Webb Space Telescope sits in front of the door to Chamber A, a giant thermal vacuum chamber located at NASA’s Johnson Space Center. The telescope will soon be moved into the chamber, where it will spend a hot Houston summer undergoing tests at sub-freezing cryogenic temperatures. via NASA http://www.nasa.gov/image-feature/webb-telescope-set-for-testing-in-space-simulation-chamber