『Ancient Galaxy Remnants Hidden in Our Own』のカバーアート

Ancient Galaxy Remnants Hidden in Our Own

Ancient Galaxy Remnants Hidden in Our Own

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New research suggests the Milky Way contains remnants of an ancient dwarf galaxy dubbed Loki. By studying metal-poor stars in the galactic plane, astronomers found distinct chemical signatures shaped by extreme events like hypernovae and neutron star mergers.

Despite differing orbits, these stars likely trace back to a single accreted system—evidence that our galaxy grew by absorbing smaller neighbors early in its history.

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