Please be specific, I'm just curious. What elements does a star contain? I love astronomy :D ..
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The universe, taken as a whole, is about 75% hydrogen and 24% helium, with all the other elements present as impurities. Therefore it stands to reason that the average star has about the same proportions. Through it's lifetime a star converts the hydrogen in its core into helium, and if it is massive enough, also fuses these into the elements up through iron, and if it supernovas, even heaver elements are created. So it returns back to space the unfused hydrogen, plus an enrichment of heavier elements, though they still remain as minor impurities.
These impurities are important to us, of course, because hydrogen is pretty thin stuff to base life upon. Our sun is reckoned to be a 3rd or 4th generation star, richer in heavy elements than earlier stars. As the saying goes, we are star stuff, but mainly the impurities, you understand.
Inasmuch as all the elements (1 through 92) exist here on Earth (except technetium and promethium, which have no stable isotopes), then all potentially occur in at least some stars.
These impurities are important to us, of course, because hydrogen is pretty thin stuff to base life upon. Our sun is reckoned to be a 3rd or 4th generation star, richer in heavy elements than earlier stars. As the saying goes, we are star stuff, but mainly the impurities, you understand.
Inasmuch as all the elements (1 through 92) exist here on Earth (except technetium and promethium, which have no stable isotopes), then all potentially occur in at least some stars.
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Depends on the star. The reason all the stars are different colors is because there's different elements burning. I know our sun has helium and hydrogen though... not sure what else. Flammable ones.