All Primary Mirrors Fully Installed on NASA's James Webb Space Telescope

NASA GODDARD SPACE FLIGHT CENTER, MD - All 18 of the primary mirrors have been fully installed onto the flight structure of what will become the biggest and most powerful space telescope ever built by humankind - NASA's James Webb Space Telescope (JWST). Completion of the huge and complex primary mirror marks a historic milestone and a banner start to 2016 for JWST, commencing the final assembly phase of the colossal observatory that will revolutionize our understanding of the cosmos and our pla...