Universe Born in Black Hole Explosion?

"University of California - Davis

Was the Universe born in a Black Hole?

The universe may have been created by an explosion within a black hole,
according to a new theory by two mathematicians recently published in the
Proceedings of the National Academy of Sciences of the U.S.A..

"It's a mathematically plausible model which refines the standard model of
the Big Bang," said Blake Temple, professor of mathematics at UC Davis and
co-author of the paper with Joel Smoller, professor of mathematics at the
University of Michigan.

In the standard model of cosmology, the universe burst into existence with
the Big Bang about 13 billion years ago. Since then, the universe, which
contains an infinite amount of matter and is infinite in extent, has been
expanding in all directions.

In the new model, the Big Bang is an actual explosion within a black hole in
an existing space. The shock wave of the explosion is expanding into an
infinite space, leaving behind it a finite amount of matter. The universe
is emerging from a white hole. The opposite of a black hole, a white hole
throws matter out instead of sucking it in.

The shockwave and the universe beyond the black hole lies in our future.
Eventually, the universe will emerge from the black hole as something like
a supernova, but on an enormously large scale, Temple said.

The equations that describe a black hole were written by Albert Einstein as
part of the General Theory of Relativity. Einstein's equations work equally
well if time runs forward or backwards. But explosive shockwaves, which
include an increase in entropy, are time-irreversible. The new theory
satisfies Einstein's equations while allowing the universe to expand.

Whether the matter emerging from the white hole came from matter that
previously fell into another black hole is an open question, Temple said.

"It is natural to wonder if there is a connection between the mass that
disappears into black hole singularities and the mass that emerges from
white hole singularities," Smoller and Temple wrote."