Try to understand the italicized words in the following sentence

Try to understand the italicized words in the following sentences from the context. Write the word(s) in the space given after each sentence. 4. Outer space can be a dangerous place where we have to protect ourselves from the dangers of ultraviolet light. Here on earth,its atmosphere screens out most of that harmful radiation.(ultraviolet)_______
【正确答案】：light from the sun that can harm people
【题目解析】：P145