We’ve just discovered something truly remarkable - an ancient star dubbed “Ghost” that is one of the most metal-poor stars ever found! Ghost is an extremely metal-poor star, meaning that its chemical composition has very few elements heavier than hydrogen and helium. This is significant because metal-poor stars are the most primitive stars in the universe, having formed shortly after the Big Bang. By studying Ghost, astronomers hope to learn more about the formation of the first stars in the universe and gain a better understanding of the conditions of the early universe.

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source: Phys.org