NASA Image of the Day: 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.

June 19, 2017 from NASA http://ift.tt/2sKRZWE