Syberghost writes "There are two major theories about the composition of the Sun. One says that it has similar composition to the planets. The other, that it has enriched levels of oxygen-16. NASA has been doing research on the soil samples Neil Armstrong brought back from the moon, to determine which of those theories is correct. Today, we have the results; they're both wrong. It looks like we're going to have to look more closely at the composition of everything in the solar system to figure this one out."