SpaceX began fueling its Falcon 9 rocket on Saturday as it prepared to send two veteran NASA astronauts to the International Space Station in a historic first crewed mission by a commercial company.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/2-spacexsfalco.jpg)
Source:
https://phys.org/news/2020-05-spacex-countdown-saturday.html