Space Telescope Mirror Test

Space Telescope mirror test

 

Mirrors of the James Webb Space Telescope (JWST) being prepared for testing in a cryogenic chamber. The JWST is the successor to both the Hubble Space Telescope and Spitzer Space Telescope and is planned for launch in 2018. It will use 18 of these hexagonal segments to make a mirror 6.5 metres in diameter. Each segment is made of gold-coated beryllium. Observing in the near-infrared part of the spectrum, the JWST’s primary scientific mission has four main components: to search for light from the first stars and galaxies that formed in the

Universe after the Big Bang, to study the formation and evolution of galaxies, to understand the formation of stars and planetary systems and to study planetary systems and the origins of life.

Image © NASA/MSFC/David Higginbotham

 

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