Arguing with an HB. He claims that, because the solar constant of radiation is 1.361 kW/m^2, or 81.65kJ/m^2, that the Apollo astronauts couldn't have survived the trip outside the VARBs. I'm trying to ask him what type of radiation this is, if it's ionizing, what its intensity is as it hits the spacecraft, and how much is left after hitting the aluminum hull of the spacecraft, but haven't gotten anything. Is there a good explanation of why this doesn't pose a threat to the astronauts? One that he might understand?