The Milky Way ate another galaxy. Scientists say they've found the scraps - KSL.com

Astronomers have identified an unusual group of stars in the Milky Way that appear to be the scattered remains of a dwarf galaxy the Milky Way swallowed about 10 billion years ago, nicknamed Loki. Kinematic and chemical evidence suggests these stars are debris from that ancient accretion event and provide a new probe of how our galaxy grew through mergers. This local discovery complements large surveys and unusual finds—such as an almost entirely dark-matter galaxy and the DESI 3D map—by offering a concrete example that helps refine models of galaxy formation and the role of dark matter.