Astronomers find dark matter galaxy in Perseus cluster

youm7.com (Arabic)

Astronomers discovered a faint galaxy, CDG-2, composed almost entirely of dark matter in the Perseus galaxy cluster. This galaxy, located 300 million light-years away, was found by searching for globular star clusters, not stars, using data from Hubble, Euclid, and Subaru telescopes. CDG-2 contains only six million solar masses of starlight, with 99% of its total mass being dark matter, suggesting it lost most of its gas due to gravitational interactions.


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