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FAST and Arecibo point to possible dark galaxy with vast hydrogen reservoir

Image: Phys.org

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  • Phys.org · October 26, 2026 10:55
    Astronomers have found a vast reservoir of hydrogen with something conspicuously missing: detectable starlight. The object, called AGC 322753, contains roughly 2 billion times the sun's mass in neutral hydrogen, a potential supply of material for making stars. Its radio signal suggests the gas may…