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Story summary
- Researchers identify CDG-2 as a potential dark galaxy in the Perseus Cluster with minimal ordinary matter.
- A study in The Astrophysical Journal Letters finds CDG-2 likely lost its star-forming material after neighboring galaxies stripped it away.
- This leaves CDG-2 with only a dark matter halo and four globular clusters, enabling a clearer view of dark matter without stars or gas.
- CDG-2 represents a significant step toward understanding dark galaxies.
