science π Milky Way ate massive dwarf galaxy 12.3 billion years ago
Hubble observations reveal the Milky Way absorbed a massive dwarf galaxy named LKH about 12.3 billion years ago. This event occurred involving the Milky Way galaxy, according to researchers at the Astrophysics and Space Science Observatory in Bologna, Italy. The collision happened approximately 1.8 billion years before the Gaia-Sausage-Enceladus merger, around 12.3 billion years ago. This finding suggests that stars born in external galaxies were crucial to the Milky Way's earliest evolution. Scientists will continue studying these ancient clusters to map out more merger events. π