how do we know the sun within our solar system is not a first generation star born right after the big bang?

We know that the Sun within our solar system is not a first-generation star born after the Big Bang because the Sun contains heavier elements.What is a first-generation star?A first-generation star is a star made of essentially only hydrogen and helium. First-generation stars are predicted to be enormous in size. They also live fast and die young.An important component of stars is hydrogen gas. The nuclear fusion of hydrogen atoms produces the energy that sustains a star throughout its life. The nuclear fusion of hydrogen atoms also produces other elements including helium, carbon and oxygen.Elements that the stars produce and that are heavier than hydrogen and helium are labeled metals. The Sun has been found to be metal-rich. This means it is at least a second-generation star.Learn more about first-generation stars here: https://brainly.com/question/5616342#SPJ4