The James Webb Space Telescope, named after NASA's second director, will have a mirror seven times the size of the Hubble Space Telescope.

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Once launched -- sometime in 2018 hopefully -- the 4.2-foot hexagonal sections will be the largest mirror ever flown in space.

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At 3.5m, it is the biggest mirror ever flown in space.

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Instead of being aimed at a point 10, 023 feet above sea level, the mirror was pointed out into space.

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