Astronomers using the Gemini North telescope have found the remnants of 106 galaxies as they transition into ultra-compact dwarf galaxies. Strongly nucleated dwarf galaxies, UCDs with envelopes and UCDs in the core of the Virgo Cluster. Image credit: Wang et al., doi: 10.1038/s41586-023-06650-z. Ultra-compact dwarf galaxies (UCDs) are among the densest stellar groupings in the Universe. Being more compact than other galaxies with similar mass, but...
