The Soyuz capsule is very small and three astronauts are squeezed in for launch and re-entry. If someone was going to be sick inside it would not be pretty and your crewmates would not appreciate it…
For these reasons astronauts tend not to eat too much before launch and re-entry and they try not to move their heads as this can also make them sick. If all else fails they can use a sick bag!
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Rosiebunny commented on :
Thank you