Extreme density fluctuations in the primordial universe could collapse into tiny black holes. These primordial black holes might contribute to dark matter or seed galaxies. They would differ from stellar black holes formed later. Detecting them could reveal early-universe physics. Some might have evaporated via Hawking radiation, while others persist today. Their existence links early Big Bang conditions to observable cosmic phenomena.
It matters because primordial black holes could explain dark matter and cosmic structure.
It also offers a direct window into conditions fractions of a second after the Big Bang.
Tiny black holes may have formed in the universe’s first moments.
CERN [cern.ch]