From the retired Hawking partner Bernard Carr in NewScientist (1 April 2023, paywall):
Recently, however, I have become interested in an even more exotic possibility: that some black holes could be older than the universe itself. It is a wild idea, but not inconceivable. And new research suggests that we might one day be able to positively identify them, a breakthrough that would radically change our understanding of cosmology.
It requires replacing the acyclic, or “Big Bang”, model of the Universe with a cyclic, or “Big Bounce” or “Big Crunch” model. I wonder if that would let us return to a Universe with a set of universal laws that don’t vary over time, or if we’d still be seeing such speculation.
My mind has been broadened.
