The chemical uniformity of stars in the same cluster is the result of turbulent mixing in the clouds of gas where star formation occurs, according to a study by astrophysicists at the University of California, Santa Cruz. Their results, published August 31 in Nature, show that even stars that don’t stay together in a cluster will share a chemical fingerprint with their siblings which can be used to trace them to the same birthplace.
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Mixing in star-forming clouds explains why sibling stars look alike
