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ESA/Hubble heic2605: Hubble identifies one of darkest known galaxies — The elusive object dubbed CDG-2 may be composed of 99% dark matter. Most galaxies in the nearby Universe are quite luminous, but some are so faint they’re nearly invisible. Astronomers, using the NASA/ESA Hubble Space Telescope in combination with other observatories, identified a galaxy that appears to be almost entirely dominated by …

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ESA/Hubble News
18 February 2026

Most galaxies in the nearby Universe are quite luminous, but some are so faint they’re nearly invisible. Astronomers, using the NASA/ESA Hubble Space Telescope in combination with other observatories, identified a galaxy that appears to be almost entirely dominated by dark matter with only a smattering of stars. The galaxy, known as Candidate Dark Galaxy-2 (CDG-2), appears to contain just four globular star clusters (compared to the Milky Way’s 150-plus), and dimly shines with the light of only about 1 million Suns.

The release, images and videos are available on:
https://climb-stage.live/news/heic2605/%3C/a%3E%3C/p%3E

Kind regards,
ESA/Hubble Information Centre
18 February 2026

 
Dark rings and new light  A neighbouring vista of stellar birth  Long-distance relationship  Galactic gas makes a getaway  Massive stars make their mark 

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