The 21st SpaceX cargo resupply mission that launches from NASA’s Kennedy Space Center in Florida carries a variety of critical research and technology demonstrations to the International Space Station.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/heartsairloc.jpg)
Source:
https://phys.org/news/2020-11-hearts-airlocks-asteroids-flies-21st.html