A preprint posted to arXiv by researchers at Oakland University in Michigan and Rice University in Texas examines whether asteroid-mass primordial black holes could be hidden in the cosmic gamma-ray glow. Primordial black holes are a proposed class of black holes that could have formed immediately after the Big Bang, rather than from the collapse of dying stars, but scientists have not directly observed one. The paper focuses on primordial black holes weighing between 10^14 and 10^17 grams, a...

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