NASA's new lightweight X-ray mirrors ready for try-outs in space

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.

source https://www.lifetechnology.com/blogs/life-technology-news-blog/nasas-new-lightweight-x-ray-mirrors-ready-for-try-outs-in-space