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Identifying which stars belong to the same cluster — like the familiar stars in this photograph, members of the Pleiades open cluster — is important for understanding how young stellar groups form and evolve. Scientists rely on precision measurements of the speeds and locations of newly discovered stellar structures to determine whether they belong to known clusters. You can find out more about these measurements of nearby groups of stars in our recent AAS Nova highlight and the corresponding research article in the Astrophysical Journal Letters. [NASA, ESA, and AURA/Caltech]
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