Agreed, it would be quite an operational hazard and probably an unethical experiment to leave astronauts on the moon for long periods. Factoring in appropriate

Agreed, it would be quite an operational hazard and probably an unethical experiment to leave astronauts on the moon for long periods. Factoring in appropriate safety margins for equipment, supplies, physiology and rescue flights, they could only stay there a few months at a time in any case.