Hank summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope. Many thanks to Scott Willoughby and the entire team at Northrop Grumman for the tour. Like Scishow: http://www.facebook.com/scishow Follow SciShow: http://www.twitter.com/scishow A[...]
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