HE0107–5240 is a star in more than one sense of the word. Chemically, it is the most primitive object yet discovered, and it is at the centre of debate about the origins of the first elements in the Universe.
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Beers, T. Telling the tale of the first stars. Nature 422, 825–826 (2003). https://doi.org/10.1038/422825a
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DOI: https://doi.org/10.1038/422825a
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