The James Webb Space Telescope has unwrapped its sunshield, crossing another important item off of its lengthy and risky deployment to-do list.
After successfully extending its deployable tower assembly , a structure that connects Webb's two halves, on Thursday , the telescope had the room to begin the preliminary steps to unfurl its gigantic sunshield. Today , mission teams completed two major next steps: deploying the's aft momentum flap and releasing the sunshield's protective membrane cover.
Webb still must unfurl the sunshield, which it will do in the next day or so by extending two booms. The mission team will then spend a few days getting the five-layer structure to the proper tension, wrapping up such work no earlier than Sunday . That will end the sunshield deployment, and the Webb team will move on to the telescope's optics. Webb's primary and secondary mirrors are expected to be deployed by Jan. 7,You can follow along with Webb's next steps in its deployment
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