4 ms·

Correct, since any element heavier than hydrogen or helium is created in stellar cores or from supernovas; stars that are metal-poor are either very old or form

Correct, since any element heavier than hydrogen or helium is created in stellar cores or from supernovas; stars that are metal-poor are either very old or formed from virgin materials from the big bang.

HPsquared 5y ago
That is, some 'metals' are present in the centre of stars, but not near the surface so it doesn't show up in the emitted light spectrum.
k__ 5y ago
I would have expected the exact opposite. They are very young, since they didn't have the time to form metal, yet.