Late yesterday, teams at the launch site successfully completed encapsulation of the observatory inside the Ariane 5 rocket that will launch it to space. Webb’s launch final readiness review will be held on Tuesday 21 December and, if successful, roll-out is planned for Wednesday 22 December.
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The James Webb Space Telescope is confirmed for the target launch date of 24 December, at 12:20 GMT / 13:20 CET.