Hubble Uncovers CDG-2: Rare Galaxy Composed of 99% Dark Matter

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Hubble Discovers Ghost Galaxy CDG-2: 99% Dark Matter, Few Stars

CDG-2, एक बहुत ज्यादा डार्क मैटर वाली गैलेक्सी है. (Photo : NASA, ESA, Dayi Li (UToronto); Image Processing: Joseph DePasquale (STScI))

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News18•20-02-2026, 15:41

Hubble Discovers Ghost Galaxy CDG-2: 99% Dark Matter, Few Stars

•Hubble and Euclid telescopes jointly discovered CDG-2, a galaxy composed almost entirely of dark matter.
•CDG-2, located 245 million light-years away, is a 'ghost galaxy' with negligible normal matter and very few stars.
•Scientists estimate 99% of CDG-2's mass is dark matter, a significant deviation from the typical 5:1 dark-to-normal matter ratio.
•Dark matter was detected by observing the peculiar behavior of globular clusters, held together by an invisible gravitational force.
•Researchers hypothesize CDG-2 lost its stars due to gravitational collisions with larger galaxies, leaving behind a dark matter skeleton.

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