Ancient Stars ReshapeAncient Stars ReshapeGalaxy Viewstimelines.challenges previous formationMilky Way's ancient thin discAstrophysics of GalaxiesNew Insights into the Milky Way's Ancient Thin DiscResearchers discover old stars, reshaping ideas about the Milky Way's formation.2025-08-30T11:20:48+00:00 ― 6 min read