All nuclear radiation is ionizing, while only the highest energy electromagnetic radiation is.

所有的核辐射都是电离，然而电磁辐射只有最高能量的才是。

Forever proliferating through space will be the electromagnetic radiation we created from our radios, satellites and phones.

从收音机、卫星和电话中产生的电磁辐射将永远在太空中扩散。

What we are seeing from earth is actually electromagnetic radiation that’s coming from stars.

我们从地球上看到的实际上是来自恒星的电磁辐射。