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The James Webb Space Telescope has officially completed its time at NASA's Goddard Space Flight Center in Greenbelt, MD.

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Over the past 21 years, hundreds of people developed, 

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Over the past 21 years, hundreds of people developed, 

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assembled, and tested the telescope.

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In 2017, the telescope passed major tests to help it get ready for space.

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In 2017, the telescope passed major tests to help it get ready for space.

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In 2017, the telescope passed major tests to help it get ready for space.

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One major extreme cold optical test remains, 

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One major extreme cold optical test remains, 

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which requires a test chamber bigger than any at Goddard.

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Enter Chamber NASA's largest cryogenic vacuum chamber, located at Johnson Space Center in Houston, TX. 

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Webb recently made the trip from NASA Goddard to Johnson.

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Webb recently made the trip from NASA Goddard to Johnson.

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Webb's transporter is a specially designed climate-controlled container.

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It is called the Space Telescope Transporter for Air Road and Sea, or STTARS.

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STTARS is so tall

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that some streetlights and power cables had to be lifted.

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Inside Chamber A, the telescope will spend about 100 days in a freezer that mimics the temperatures in space.

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Inside Chamber A, the telescope will spend about 100 days in a freezer that mimics the temperatures in space.

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Light will pass through the telescope to recheck all its optics and ensure they are correctly aligned.

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