Scientists got their results by exposing mice to heavy ion radiation, which is believed to be like the galactic cosmic radiation that someone would be exposed to in deep-space.

科学家们通过将小鼠暴露在重离子辐射下得出了他们的结果，重离子辐射被认为类似于人们在深空中暴露的银河系宇宙辐射。

A person on its surface can receive over 400 times the maximum safe dosage of heavy ion radiation, enough to be fatal within ten hours, even in a spacesuit.

一个人在它的表面可以接受超过最大安全剂量 400 倍的重离子辐射，即使穿着宇航服，也足以在 10 小时内致命。