Astronomers have recently discovered a group of extreme stars with unique properties that link them to the early universe. The findings, published in the Astrophysical Journal, suggest that these stars have existed for billions of years and could help us learn more about the evolution of the universe.

These stars, dubbed “ultra-metal-poor” stars, have a much lower metallicity than other stars in the Milky Way. This means they contain only a tiny fraction of the metals that are commonly found in other stars. The researchers believe that these stars formed in the very early stages of the universe, when stars had not yet had time to accumulate metals. As such, they offer a unique window into the earliest stages of the universe.

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source: Phys.org