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Telescopes and space missions

Telescopes and space missions

The ten-billion-dollar gamble: Keeping the JWST cool

20 Dec 2021

The James Webb Space Telescope (JWST) is scheduled to launch on 25 December. To mark the event, Physics World is publishing a series of blog posts on the telescope’s technological innovations and scientific missions. This post is the fourth in the series. Read the first here.

Engineers installing MIRI onto the JWST at NASA’s Goddard Spaceflight Center
Extra cold: Engineers installing MIRI onto the JWST at NASA’s Goddard Spaceflight Center. (Courtesy: NASA/Chris Gunn)
Of the four instruments aboard the James Webb Space Telescope (JWST), three – the Near Infrared Sp

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Keith Cooper is a freelance science journalist and editor
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