Recent testing has shown that super-thin, lightweight X-ray mirrors made of a material commonly used to make computer chips can meet the stringent imaging requirements of next-generation X-ray observatories.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/nasasnewligh.jpg)
Source:
https://phys.org/news/2019-07-nasa-lightweight-x-ray-mirrors-ready.html