This awesomely shot video shows the build-up of the international James #Webb Space Telescope's primary mirror
https://www.esa.int/ESA_Multimedia/Videos/2021/05/Webb_mirror_beauty … @esa_webb
#WebbFliesAriane #UnfoldTheUniverse #ExploreFartherpic.twitter.com/NGLE3VGV5z
All of Webb's systems are designed to survive micrometeoroid impacts. Our tests have shown that micrometeoroids have negligible effects on beryllium (which Webb's mirrors are made of). Beryllium mirrors have also flown in space exposed to micrometeoroids without problems.