The four Nasa astronauts who will sit in the Orion spacecraft at the top of the rocket are Americans Reid Wiseman, Victor Glover, Christina Koch, along with Canadian astronaut Jeremy Hansen.
Before launch, the four astronauts go into quarantine. This means they stay in a controlled environment and limit contact with other people so they don’t catch illnesses like colds or flu.
For Artemis 2, the crew entered quarantine at Johnson Space Center in Houston, Texas, about two weeks before their planned launch. They can still speak to their families and mission teams, but visits are carefully controlled and everyone they meet must pass health checks.
When the launch was delayed, the astronauts were allowed to leave quarantine and return to more normal training. Once a new launch date is set, they will go back into quarantine again.