News Astronomy Neutrinos hint the sun has more carbon and nitrogen than previously thought Figuring out our star’s makeup is crucial for understanding the entire universe Made mostly of hydrogen and helium, the sun also has heavier elements such as carbon and nitrogen. But scientists disagree just how much of those heavier elements there are. SOLO/ESA and NASA Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Ken Croswell June 16, 2022 at 7:00 am After two decades of debate, scientists are getting closer to figuring out exactly what the sun — and thus the whole universe — is made of.