If you could bring something back from Mars to Earth, what would you choose? This question is becoming reality, as ESA opens a call for scientists to join a NASA team working to determine which martian samples should be collected and stored by the Perseverance rover set to launch this Summer.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/choosingrock.jpg)
Source:
https://phys.org/news/2020-04-mars-earth.html