Hubble Space Telescope Uncovers Evidence of Ancient Milky Way Merger 11.8 Billion Years Ago

Summary

NASA's Hubble Space Telescope has provided definitive evidence of a dwarf galaxy, named LKH, merging with the young Milky Way galaxy approximately 11.8 billion years ago. This discovery extends the understanding of our galaxy's early evolution by 1.8 billion years and was published in the journal Nature Astronomy.