Astronomers using the NASA/ESA Hubble Space Telescope have found definitive evidence that the young Milky Way swallowed a dwarf galaxy just two billion years after the Big Bang, revealing one of the earliest major mergers in the history of our Galaxy. The Milky Way today is a massive spiral galaxy home to hundreds of billions … Continue reading Milky Way Swallowed Dwarf Galaxy Nearly 11.8 Billion Years Ago