More than 500 people have travelled into space to date and, while we know a little about how life without gravity affects our physical health, we know almost nothing about how it affects our minds.
![](https://scx1.b-cdn.net/csz/news/tmb/2019/whatneurosci.jpg)
Source:
https://phys.org/news/2019-09-neuroscientists-brains-space-gravity-flight.html