From disrupted biological clocks to radiation and contamination hazards, Europe is running experiments on the International Space Station to take human exploration one step closer to Mars.
![](https://3c1703fe8d.site.internapcdn.net/newman/csz/news/tmb/2019/gettingready.jpg)
Source:
https://phys.org/news/2019-05-ready-mars-space-station.html