99% dark matter: Hubble Telescope captures a nearly starless galaxy
SMRTR summary
The Hubble Space Telescope has discovered an extremely rare "dark galaxy" called CDG-2, located 300 million light-years away in the Perseus Cluster, which is composed of 99% dark matter with almost no visible stars. This galaxy was detected only through its tightly grouped globular clusters using combined observations from Hubble, Euclid, and Subaru telescopes. The galaxy's lack of stars likely results from harsh gravitational forces in the Perseus Cluster that strip away hydrogen gas essential for star formation.
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