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In early March, the James Webb Space Telescope mirror wings just deployed to their full open position.

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In early March, the James Webb Space Telescope mirror wings just deployed to their full open position.

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Webb needs the 6.5 meter primary mirror to capture light from some of the faintest objects in the Universe.

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But it is so large it must fold to fit into the Ariane 5 rocket fairing.

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But it is so large it must fold to fit into the Ariane 5 rocket fairing.

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A deployment test uses the telescope's internal electronic system.

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This offloads the weight of the mirrors.

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This offloads the weight of the mirrors.

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The mirrors will be weightless in space.

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This deployment is one of the many final tests before launch.

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This deployment is one of the many final tests before launch.

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This will be the mirror's final configuration,

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once in space.