NASA nails trickiest job on newly launched James Webb Space Telescope

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NASA aced the most complicated, critical job on its newly launched space telescope Tuesday: unrolling and stretching a sunshade the size of a tennis court.

Ground controllers cheered and bumped fists once the fifth and final layer of the sunshield was tightly secured. It took just 1 1/2 days to tighten the ultra-thin layers using motor-driven cables, half the expected time.

The 7-ton James Webb Space Telescope is so big that the sunshield and the


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