https://en.wikipedia.org/wiki/Stellar_population#Population_II_stars https://en.wikipedia.org/wiki/Stellar_population#Population_... "Thus far, they have uncov

https://en.wikipedia.org/wiki/Stellar_population#Population_II_stars https://en.wikipedia.org/wiki/Stellar_population#Population_... "Thus far, they have uncovered and studied in detail about ten ultra metal poor (UMP) stars" https://en.wikipedia.org/wiki/List_of_oldest_stars https://en.wikipedia.org/wiki/List_of_oldest_stars