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Hubble identifies a near-invisible galaxy that may be 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 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.
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