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 ...

Source: [Phys.org](https://phys.org/news/2026-10-fast-arecibo-dark-galaxy-vast.html)

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