This is how our sun was born.

Second, all the elements that had been accumulating in the core of the star,like carbon, oxygen, nitrogen, iron,as well as all of those formed in the supernova explosion,are ejected in to interstellar space where they mix with the gas that's already there.History then repeats itself.Gas clouds, now containing many elements besides the original hydrogen and helium,have higher density areas that attract more matter, and so on.As before, new stars result.Our sun was born this way about 5 billion years ago.