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Astronomers Detect Galaxy Thought to Be Made of 99% Dark Matter

Candidate Dark Galaxy-2 (CDG-2) in the Perseus Cluster may be over 99.9% dark matter, with star formation halted by gas stripping from nearby galaxies, researchers said.

Summary by WAAY-TV
(CNN) — Astronomers have spotted a galaxy so faint, it’s almost invisible — a discovery that could help illuminate one of the most elusive substances in the universe.

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The dark universe has just delivered one of its most dizzying secrets. An international team of astronomers has just announced the discovery of a celestial object that defies understanding: Candidate Dark Galaxy-2 (CDG-2). Located 300 million light years away, in the heart of the dense cluster of Persia, this galaxy is a true cosmic anomaly. It is composed almost exclusively of [...]

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WAAY-TV broke the news in Huntsville, United States on Tuesday, March 3, 2026.
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