For anyone else unfamiliar with the term, here's a link to an explanation: https://kipac.stanford.edu/highlights/population-iii-stars-universes-ultimate-reclusi

For anyone else unfamiliar with the term, here's a link to an explanation: https://kipac.stanford.edu/highlights/population-iii-stars-universes-ultimate-reclusive-pop-stars https://kipac.stanford.edu/highlights/population-iii-stars-u... Particularly – "Astronomers grouped stars in the order they were observed, so Pop I stars are present-day stars, with Pop II stars being one generation older. Pop III stars are the hypothesized oldest stars in existence."