Webb on Ariane 5 roll-out to the launch pad

Video: 00:01:22 On Thursday 23 December, theJames Webb Space Telescope, safely stowed inside the fairing of ESA'sAriane 5launch vehicle, left the final assembly building for roll-out to the launch pad at Europe's Spaceport in French Guiana. Webb, no longer in sight since itsencapsulation in the fairing on 17 December, has been closely monitored. The fairing is equipped with specialised environmental controls that keep the observatory in a perfectly controlled temperature and humidity range durin...