Astronomers probed 340,000 Milky Way stars to determine their chemical makeup. With the data, they can now find the Sun's original birth cluster, discover its solar siblings, and trace our galaxy's evolution. Author: "There is no other dataset like this ever collected anywhere else in the world."

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Astronomers probed 340,000 Milky Way stars to determine their chemical makeup. With the data, they can now find the Sun's original birth cluster, discover its solar siblings, and trace our galaxy's evolution. Author: "There is no other dataset like this ever collected anywhere else in the world."