It's the first one. I asked my Spanish friends. Don't worry it's the right answer.
There is no -AR ending for ellos? ellos means “they”. There’s no AR ending. Please rephrase what you are asking.
Answer:
it' snowing
Explanation:
nevando means snow in Spanish
<span>They look at the light from the star using a spectrometer. The composition of the light tells them what elements are present in that star</span>