James Webb Space Telescope, the biggest ever built, fully unfolds giant mirror to gaze at the cosmos

Astronomers and space fans around the world can breathe a sigh of relief: The James Webb Space Telescope is now fully deployed.

The $10 billion NASA observatory unfolded the second “wing” of its massive primary mirror today (Jan. 8), bringing the light-collecting structure up to its full size and marking the end of the mission’s long, risky and ultra-complex deployment phase. 



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