If they had gone to Mars, the tally would have been 0/237. The reason why? Because the differences of scale between going and coming back from Mars vs the Moon

If they had gone to Mars, the tally would have been 0/237. The reason why? Because the differences of scale between going and coming back from Mars vs the Moon is about as much as the Circumnavigation of Earth and doing an average sail voyage between two well known ports in the Mediterranean Sea. There were plenty of sailors that survived those too, but the difference of scale did matter at the end.