Building the Webb Space Telescope is a complex process. Over 100 companies around the world have worked with NASA and the European and Canadian space agencies to design, plan and construct the telescope's various parts, often creating new technologies to deal with the unique circumstances Webb will face.

Those parts are being brought together and assembled into the telescope's major components. At each step, the parts undergo testing to ensure that they function correctly individually, then as part of a unit, and then as part of the complete telescope. Each piece is also tested to ensure that it can survive both launch and the extreme conditions of space. Webb's scientists and engineers must continually innovate to meet the challenges of building this cutting-edge telescope.

Follow Webb's saga as the next great space observatory comes together. This page will help you navigate to the best places to find information on Webb's progress.


Follow the journey of Webb's mirrors from raw ore into marvels of scientific precision. This video takes you from the mountains of Utah, where the beryllium used to make the mirrors is mined from the earth, to the giant thermal vacuum chamber at NASA's Johnson Space Center in Texas, where the mirrors will be exposed to extraordinary temperatures.


VIDEO: Mission Update: Mirror Odyssey
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WATCH: Follow the journey of Webb's mirrors from raw ore into marvels of scientific precision.
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