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• UGI USER
• ancient galaxies Astronomy cosmic mergers dwarf galaxies Gaia mission Gaia-Sausage-Enceladus galactic collisions galaxy evolution globular clusters Hubble Space Telescope Low-energy-Kraken-Heracles Milky Way Milky Way history Space Science Universe
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Milky Way Evolved Through Ancient Collisions

MILKY WAY EVOLVED THROUGH ANCIENT GALACTIC COLLISIONS WHY IN THE NEWS (40 Words) Scientific Discovery: Astronomers are reconstructing the Milky Way’s nearly 12-billion-year history by studying the age, chemical composition and movement of stars. Major Findings: Recent research has identified ancient galactic mergers, including the Gaia-Enceladus collision and the older Low-energy-Kraken-Heracles merger. GALACTIC ARCHAEOLOGY AND …