#00427 / Space
Oldest Known Star
Evidence-backed14.2± 0.4 billion years
HD 140283
HD 140283, the Methuselah star, is a prominent contender for the oldest known star. A 2025 asteroseismic model estimated 14.2 ± 0.4 billion years, whereas a 2024 tailored-abundance model estimated about 12.3 billion years; its absolute ranking remains uncertain.
