TINY, ancient black holes that may have formed in the early universe could help us uncover the internal structure of the densest stars. If they exist, these black holes could devour neutron stars from the inside, creating ripples in space-time called gravitational waves that we might be able to detect.
So-called primordial black holes are potentially important as an explanation for some of the effects of dark matter, but are predicted to be small, and so nearly impossible to directly detect. “An Earth-mass primordial black hole is only expected to have a radius of about 0.9 centimetres,” says Yong-Feng Huang at Nanjing University in China. “You can imagine how hard it would be to detect such a small object that is completely black.”
However, like any other object, some primordial black holes…
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New Scientist (Digital) - 1 Issue, 23-Apr-22