Mysterious cosmic hum may originate from 13-billion-year-old dark matter stars

Scientists propose that today's mysterious gravitational-wave background may carry imprints of hypothetical "dark stars" from roughly 13 billion years ago, powered by dark matter rather than nuclear fusion. Descendants of these ancient objects could account for a significant portion of the detected signal. The finding could offer a new way to probe the formation of the universe's first supermassive black holes and the nature of dark matter.

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