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辐射有多可怕？直接暴露在宇宙辐射下会发生什么？
太空和火星的辐射有多强？为什么在地球上不要怕辐射？人类总是对于辐射两个词比价恐怖，但是太空辐射才是辐射最强大的地方，而在地球上其实并没有多少，这样感谢我们的地球磁场与大气层
神奇的宇宙9/57
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