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Researchers claim to have discovered the oldest stellar disk in the Milky Way

We compare Milky Way observations and TNG50 simulations and scale height-to-height ratios as a function of age. Credit: Nature Astronomy (2024). DOI: 10.1038/s41550-024-02382-w A team of astronomers and astrophysicists from the Chinese Academy of Sciences and the University of Toronto has discovered what may be the oldest stellar disk in the Milky Way. In their study, reported in the journal…