Could dark matter have been forged in a 'Dark Big Bang?'
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> Are planet-killing black holes hiding inside your cat?
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Hollow out the earth? Preposterous! No cavity can persist in the core of an object big enough to be drawn into the shape of a sphere under its own gravity.
Tiny black holes that would drill microscopic tunnels through matter wouldn't go unnoticed. I think they don't exist. For that matter, I think black holes, in the sense of gravitational singularities, don't exist either, for the simple reason that their mass energy, even though huge, is not infinite.
If a theory predicts a singularity, this merely tells us the theory is incomplete.
Jeroen Belleman