What are stars "made of"? Specifically the different layers. I am concentrating on stars in their main sequence, so please concentrate your answer on those stars.

Hydrogen. Lots and lots of hydrogen. With a lesser portion of helium and some other components. Most of the elements known to us are found in some fraction of content. Remembering that most stars are so massive that the total mass of this planet Earth would be less than 0.25% of the stars. Hydrogen. Is the element of most of the mass.

Pretty much entirely hydrogen, with helium making up almost 100% of the remaining stuff.

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WANTED:

Schroedinger's Cat

Dead And Alive

And the remaining stuff is distributed fairly evenly throughout the star?

How much of the helium in a star is in the core and how much is ambient?

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Keeper of the Jabberwock

I found a nice table here: http://library.thinkquest.org/15215/.../elements.html

The fun part is that although all elements besides hydrogen and helium are more than scarce in the sun, due to its sheer size, those are, by our standards, still vast amounts.

For instance, according to the table linked above, gold makes up 5x10^-10% of the sun's mass.

If I've done my math correctly (which I probably haven't), that's somewhere around 1x10^17 metric tons of gold.

That's lots of gold.

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I've become used to the taste of crow.

Every atom that exists was made in a star so the answer is everything... the composition on the other hand it matters what you go by as one says near 99% hydrogen, 1% helium and the other measure does the exact reverse...and then whatever else in random quantities based on different star ages size and type

Actually, the majority of the atoms in the Universe were not made in stars. The Universe is largely composed of hydrogen and helium, and most of those atoms have existed unchanged since the first few minutes after the Big Bang.

Grant Hutchison