Universe  ID: 12775

The Beauty of Webb's Mirrors

NASA’s James Webb Space Telescope’s gold-plated, beryllium mirrors are beautiful feats of engineering. From the 18 hexagonal primary mirror segments, to the perfectly circular secondary mirror, to the slightly trapezoidal tertiary mirror, each reflector went through a rigorous refinement process before it was ready to mount on the telescope. This critical formation process had to be flawless. Webb will use the mirrors to peer far back in time to capture the first luminous objects and the creation of the first stars and galaxies. Watch the video to see how Webb’s mirrors were made.


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Eric Villard (InuTec, LLC)

Eric Villard (InuTec, LLC)

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NASA's Scientific Visualization Studio

Primary Mirror Segment Cryogenic Testing Image Credit: NASA/MSFC/David Higginbotham

Gold-coated Engineering Design Unit (EDU) Primary Mirror Segment Image Credit: Ball Aerospace/Drew Noel

A Clear Reflection on the Webb Telescope's Secondary Mirror Image Credit: NASA/Chris Gunn

James Webb Space Telescope Tertiary Mirror Image Credit: Ball Aerospace/Ben Gallagher, Quantum Coating Incorporated

May 4th - Goddard Takes a Selfie in JWST Image Credit: John Mather

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