Nearly starless galaxies exist

Astronomers report CDG‑2, about 300 million light‑years away in the Perseus Cluster, appears to be ~99.9% dark matter and is visible only through a few bright globular star clusters and a faint halo. The team used Hubble, ESA's Euclid, and Subaru data plus a globular‑cluster–based search method to infer a massive dark halo with almost no ongoing star formation, likely because a cluster environment stripped its gas. — If confirmed, these nearly starless 'dark' galaxies become clean laboratories to test dark matter behavior and galaxy‑formation theory and provide a new observational route (globular clusters) to find more such objects.