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Behind the Webb, show 8: Stretching Webb's Wings

Date- Nov 2010 Source- http://webbtelescope.org/webb_telescope/behind_the_webb/ 'One of the dominant features of the Webb telescope is its tennis court-sized sunshield. The sunshield protects the observatory from unwanted light, keeping it cool and allowing it to detect heat from faraway objects in the universe. Getting such a huge sunshield into orbit, however, is a technical feat. Webb's sunshield will be folded up during launch, and then unraveled in a seven-hour deployment process as the Webb telescope reaches its destination a million miles from Earth. Two deployable towers, or Mid Boom Assemblies (MBA), serve to stretch the sunshield open. The completion of this hour-long process triggers another mechanism that separates the sunshield's five layers, readying the sunshield for work.'
Length: 03:09

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