Radiation from space is called cosmic radiation, which is constantly hitting the Earth.

来自太空的辐射称为宇宙辐射，这种辐射不断撞击地球。

An air company says that it "strictly manages" cosmic radiation exposure for its flight crew.

一家航空公司称其进行“严格管理”以避免机组成员遭受宇宙辐射。