And you avoided the question. You send an animal on a multi-day trip and he experiences pain. He can't tell you what's wrong or even where it hurts. He dies from some unknown radiation. What was it? Why wasn't it predicted based on our knowledge of stellar physics and astronomy. The dead animal can't tell you. Is that animal more susceptible to whatever type of radiation this is? We don't know because in your world our knowledge of stellar physics is completely wrong and we have no idea what to expect. They didn't send animals in airplanes first, or to the bottom of the ocean. What if there had been "unseen dangers" there? Apparently those must all be faked too.

All you've got is an "if I ran the zoo" fallacy and it isn't even that well thought out.