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There is a little fun fact I came across: the actuators moving the mirrors in JWST were prototyped with Lego! Specifically, when watching this documentary on them:

I noticed that first comment on this video is from Robert Warden, who designed these devices. To quote: "Robert Warden here. I wrote the paper back in 2006. I just wanted to say how impressed I am with your reverse engineering! Your graphics and description are very well done. Back then, we didn't have easy access to 3D printers, so I built the first model out of Legos, which is still on my desk! Wishing you all the best - Bob"

He also provided a video of this Lego model:

 

 

 

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