> In defence of my comment, we have never tested a human-carrying craft in non-earth-orbit-space, during a solar mass ejection event ... That's true, but (a) w

> In defence of my comment, we have never tested a human-carrying craft in non-earth-orbit-space, during a solar mass ejection event ... That's true, but (a) we know exactly what radiation levels take place during such an event, and (b) we know how to build radiation shields. It's just not practical to launch an adequate shield. > but actually trying it is the only way to know if we're right ... No, we have enough experience with radiation to know our model corresponds to reality. > but it's still not a solved, easy problem. It's solved, but it's not easy.