A.The appendix is left over from an earlier stage in evolution. It used to hold bacteria for digesting raw meat & grass, which humans no longer need to do.
Q.How long does it take to recover from having your appendix out
A.Recovery time from having your appendix out depends on age, condition, complications, and other circumstances, but usually is between 10 and 28 days.
Q.Can you fly to the moon if you have your appendix? Or do you have to have them removed?
A.Astronauts do not have to have appendectomies before space travel. The idea is being considered as a safeguard for future longer space missions to Mars.