And our universe would look like a tiny black hole to an observer:
A strange new theory suggests that tiny primordial black holes — the ones that formed at the very beginning of our universe — could make up dark matter and, bizarrely, contain tiny collapsed universes of their own.
It’s a bizarre idea, but as Motherboard reports, it tackles several of the most significant mysteries of the cosmos all at once, albeit in a speculative fashion. But most controversially about the research, which was published in the journal Physical Review Letters in October, is that it suggests our entire universe might just look like any other tiny black hole bubble to an outside observer.Dan Robitzski, “Scientists claim black holes are made of collapsed universes” at Futurism
The paper is paywalled.
It’s interesting how science is becoming indistinguishable from science fiction, if not mysticism.
See also: Harvard Astronomer: Aliens visited in 2017! Now a book! Okay, Oumuamua is unusual. But here’s what seems even more unusual. That a Harvard astronomer would be retailing stories that, sixty years ago, were the domain of tabloid magazines. And people are listening seriously.