China to take women to heaven and back

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Every gram

In practice, once you've gone to the effort of putting a reliable life support system into space, the additional mass of actually putting a person inside is fairly small and the differences between one person and another are insignificant.

If you were actually in the business of optimising your budget, you'd use a robot for messing about in Earth orbit. You'd use a less reliable rocket to put up much less mass and save millions on every mission.

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