The Milky Way has not always been the enormous spiral galaxy we see today. Like many large galaxies, it grew partly by swallowing smaller neighbors. Now, observations from NASA’s Hubble Space Telescope have revealed strong evidence of one of the earliest major mergers in our galaxy’s history. The discovery pushes scientists’ detailed knowledge of the […] The post Hubble Discovers a Lost Galaxy Swallowed by the Milky Way 11.8 Billion Years Ago ap…