Sex in space

The conditions governing sex in space

Have become a necessary study due to plans for long-duration space missions

Issues include disrupted circadian rhythms, radiation, isolation, stress

And the physical act of intercourse in zero or minimal gravity

Human sexual activity in the weightlessness of outer space

Presents difficulties due to Newton's third law

According to the law, if the couple remain attached, their movements will counter each other

Consequently, their actions will not change their velocity unless they are affected by another, unattached, object

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