There are atmospheric regulators in the accommodation, so astronauts don’t have to wear space suits in the station. In the real world, the astronauts will perform Human Exploration Research Analog (HERA) training (Gushanas, 2016) at Johnson Space Center. HERA is a three-story habitat that has a completely independent living system. Much like in the movie, the simulator has a living compartment, workstation and simulated airlock.
The Plant