A tiny sail made of the thinnest material known—one carbon-atom-thick graphene—has passed initial tests designed to show that it could be a viable material to make solar sails for spacecraft.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/ultrathinsai.gif)
Source:
https://phys.org/news/2020-05-ultra-thin-journey-star.html