https://www.youtube.com/watch?v=ALGI0ex0-ac
https://www.jpl.nasa.gov/edu/learn/project/space-origami-make-your-own-starshade/
NASA JPL engineers fold giant starshades that unfurl in space to block a star’s glare so telescopes can see faint planets.
JPL also published a paper origami project so you can fold a desk-sized version at home.