#JWST's flight backplane (can you tell where the mirrors go?) on display @northropgrumman.pic.twitter.com/WEMH8RQboN
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@RomuluSimo @northropgrumman This piece of hardware (the backplane) gets tested @NASA_Johnson in giant Chamber A: https://www.flickr.com/photos/nasawebbtelescope/sets/72157631534347316 …