How many people can fit on the ISS? At what person would life support be overwhelmed?
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2$\begingroup$ The number of astronauts is limited by the number of simultaneously docked Soyuz capsules at the ISS. For each astronaut there should be a seat in docked Soyuz if an emergency evacuation is necessary. $\endgroup$– UweMar 16, 2019 at 20:23
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3$\begingroup$ Highly related: space.stackexchange.com/questions/21759/… An answer there says the limit is 12. $\endgroup$– Organic MarbleMar 17, 2019 at 0:00
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2$\begingroup$ @Muze you cannot reenter safely in a Soyuz without a custom fitted seat liner space.stackexchange.com/questions/12926/… $\endgroup$– Organic MarbleMar 17, 2019 at 0:04
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1$\begingroup$ @Muze that answer does not address the seat liner issue. space.stackexchange.com/questions/21310/… $\endgroup$– Organic MarbleMar 17, 2019 at 1:10
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1$\begingroup$ @Muze you cannot fit more than 3 people into a Soyuz. There just isn't enough room for that. $\endgroup$– HobbesMar 17, 2019 at 8:34
1 Answer
The most that have been on the ISS at one time is 13 persons, but only for a short duration during crew changeover. Reference: www.space.com/6503-population-space-historic-high-13.html
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$\begingroup$ But that was with a docked Shuttle which carries its own life-support. $\endgroup$– GordonDMar 20, 2021 at 10:07