By the way, two Crew Dragon ships will be at the international station for the first time.
A few minutes ago, the Space X Falcon 9 launch vehicle successfully launched in the United States. There are four astronauts on board, representing the American, European and Japanese space agencies.
This is the fourth flight of the Falcon 9 with a reusable Crew Dragon capsule. It was first used in the spring of last year.
The rocket will dock to the International Space Station (ISS) tomorrow. Thus, for the first time, two Crew Dragon ships will be on the ISS at once. The astronauts will stay in low-Earth orbit for six months.