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Its story

3 Sagittarii shines with the yellow-white light of F-type stars, yet at nearly a thousand light-years away its glow reaches the human eye only faintly. Its brightness varies subtly, a slow pulsation hinting at internal processes of transition. It belongs to Sagittarius, the constellation pointing toward the very heart of the Milky Way —when this light set off, the first Bourbon kings were just rising in Europe—.