The heavier elements (carbon, oxygen, nitrogen, iron, gold, and the rest) make up only about 2% of the Sun's mass. Some scientist think that we are made of stars dust. Carbon, Nitrogen, Oxygen, and the Other Elements Needed for Life Were Produced by Earlier Generations of Stars. So from this we ca see that chemistry is everyvere.Chemistry helps us to understand the stars and maybe different life on the different planet. One of the most famous stars, planets, is Saturn.Saturn, the sixth planet from the sun, is famous for its rings.These ring posses gas.Composed mainly of hydrogen gas, Saturn is the least dense planet in the solar system. Some times people are wondering do the star last for ever?.