A study conducted by a team of national laboratory and NASA researchers has found that the environment of the International Space Station is affected by the microbial composition of the astronauts themselves.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/26-researchersf.jpg)
Source:
https://phys.org/news/2020-05-space-station-surface-microbial-profile.html