WEBVTT FILE

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is  the next premier space observatory.

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It will extend the discoveries of the Hubble Space telescope.

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And observe the birthplaces of planets, stars and galaxies.

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It is named after James Webb.

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NASA's second administrator

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and champion of many NASA science missions.

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At 3 stories high and the size of a tennis court

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it will be the largest telescope ever sent into space.

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And 100 times more powerful than Hubble.

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It is so big it has to fold to fit in the rocket only 5.5 meters wide.

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And unfold segment by segment, once in space.

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Webb’s mirrors are coated with a super thin layer of gold

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that is about 1000 atoms thick to optimize their reflectivity in the infrared.

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Webb will launch from French Guiana in 2018.

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It is launched near the equator

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because the faster spin of Earth there gives the rocket an extra push.

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Webb will orbit the sun 1 million miles from Earth

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at the second Sun-Earth Lagrange point

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where the telescope will operate below -390 F.

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The telescope will observe infrared light with unprecedented sensitivity. It will see the first galaxies

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born after the Big Bang over 13.5 billion years ago.

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Webb's infrared cameras are so sensitive

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they must block light from the Sun, Earth, and Moon.

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The 5-layer sunshield is like having sunblock of SPF 1 million.

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Webb is an international mission

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with contributions from the European Space Agency and Canadian Space Agency

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Scientists all over the world will be able to use Webb

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to further into space and back into time

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than ever before

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