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Are we living in a baby universe that looks like a black hole to outsiders?

(Baby universes could have branched off the main universe after the Big Bang and may appear to us as black holes.)

‘Researchers recently used a huge telescope in Hawaii to study primordial black holes.
These black holes might have formed in the early days from baby universes and may be responsible for dark matter.
The study also raises the possibility that our own universe may look like a black hole to outside observers….’

— via Big Think