Space/Science — HabitableZone

Space/Science » in reply to I'm trying to think.

Yes, and..

The Soyuz fuel tank does provoke some corrosion and that's why they impose a limit. The reason is that some fuel is used to get to the station in the beginning of a mission and it leaves valves open. If a spacecraft can be brought to the station without consuming fuel, then it can stay much longer.

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