Do even low-mass dwarf galaxies merge? New clues from the outer stars of a Milky Way satellite

Using the Subaru Telescope's wide-field camera, astronomers have discovered a previously unknown structure surrounding a tiny satellite galaxy of the Milky Way. The newly discovered structure exhibits features resembling the remnants of past galaxy mergers. This result provides compelling evidence that even extremely low-mass dwarf galaxies may have experienced mergers in their past.