More on the @NASAGoddard arrival of the backplane, a crucial piece of #JWST flight hardware: http://www.nasa.gov/feature/james-webb-space-telescope-backplane-arrives-at-nasa-goddard-for-mirror-assembly …pic.twitter.com/p7aAgSYQi7
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@NASAWebbTelescp@NASAGoddard how big, roughly, is this backplane?
@Jon1443 @NASAGoddard The center section (with the hexagonal holes) holds a 6.5 m/21 ft tall mirror. There are people for scale at the top!
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@NASAWebbTelescp@NASAGoddard oh wow, I didn’t even notice them at first -
@Jon1443@NASAGoddard It is a huge piece of hardware! Our sunshield will be even bigger - the size of a tennis court!
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