no protection (for the humans or the electronics) against massive radiation spikes put out by large solar flares, of which there were numerous during apollo missions. all astronauts should have basically become gravely ill or died quite soon after exposure, perhaps even during mission time, if not soon after returning. all the film in the cameras would have been ruined before it was even used on the moons surface. this very issue still prevents nasa from going to the moon, they have admitted as much now, but fail to address the implication for the apollo missions.
Ireland