I assume that if everyone left the ISS, there is a method that can be used to put people back on it. For example to open the “door” from the outside.
However how long could the ISS remain functioning without anyone on it?
I assume that if everyone left the ISS, there is a method that can be used to put people back on it. For example to open the “door” from the outside.
However how long could the ISS remain functioning without anyone on it?
The main factor that would limited unmanned lifetime of the ISS is a breakdown of a critical system. The thermal control system comes to mind: without cooling, you'll get a much wider range of temperatures which can lead to other failures. This is one of the more problematic systems on board as well, requiring regular repairs.