And, critically, the radiation dose from a Mars trip could exceed the lifetime exposure limits space agencies have established for their astronauts, increasing the chances of cancer and central nervous system damage.

更严重的是，火星旅行辐射的剂量超过了航天局为宇航员设置的终生接触限度，而这会让癌症和中枢神经系统损坏的风险上升。