JOURNAL ARTICLE

Hubble spotted a 'dark galaxy' that's at least 99.9% dark matter: Search through space telescope's archival images reveals unusually dim galaxy.

  • Published In: Sciencemag.org, 2026. P. N.PAG 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Clery, Daniel 3 of 3

Abstract

The article discusses the discovery of a potential "dark galaxy," referred to as candidate dark galaxy-2 (CDG-2), which is believed to be composed of over 99.9% dark matter. Astronomers utilized archival images from the Hubble Space Telescope to identify a group of four globular clusters surrounded by a faint glow, indicating minimal star formation. This finding supports theories about the formation of low surface brightness galaxies, which may stop developing due to the loss of star-forming gas. While the discovery is significant, some experts express caution, suggesting that further evidence is needed to confirm the nature of these clusters. [Extracted from the article]

Additional Information

  • Source:Sciencemag.org. 2026/02, pN.PAG
  • Document Type:Article
  • Subject Area:Astronomy and Astrophysics
  • Publication Date:2026
  • Accession Number:191843124
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