One of the most significant discoveries of the past decades is the realization that there are more planets than stars in our Galaxy, with a planet diversity that has far surpassed our expectations. A major focus of 21st-century astronomy is the characterization of Earthsized planets in the habitable zones (HZPs) around nearby M dwarfs and the

The number of identified primitive low-metallicity stars has steadily grown. Today, we know of stars with less than one ten-millionth of the solar iron content, but no stars completely devoid of metals —known as Population III (Pop III)— have been identified so far. It was commonly accepted that only massive, short-lived Pop III stars formed from