#### (#8) There Are Maybe Other Universes Out There That Got Their Start The Same Way

If our universe exists in a black hole, it could be just as easily argued that other universes exist inside their own black holes as well.

However, while Poplawski's theory explains the Big Bang and the origins of our universe pretty succinctly, it doesn't reveal much about the parent universe. Where did it originate?Has it always existed, or did it form just like our universe? In short, how many nesting dolls are there with these black hole universes?

University of California Davis physicist Andreas Albrecht says there won't be an answer anytime soon. "There're really some pressing problems we're trying to solve, and it's not clear that any of this is offering a way forward with that," he told National Geographic.

#### (#1) A Black Hole Doesn't Collapse Everything - It Spits It Out At A Different Point In Spacetime

Black holes are inescapable regions in spacetime. For years, many believed anything sucked into a black hole by its strong gravitational pull would collapse, eventually folding into the black hole's singularity, or densest point.

While it is impossible to study what actually is in a black hole, Poplawski has an idea: what if our universe exists in a black hole inside of another universe?

Poplawski believes matter is carried via an Einstein-Rosen bridge, AKA a wormhole. According to Poplawski, the opening of a wormhole is a black hole, and on the other side is a "white hole." When the matter enters a black hole, it travels to a different time and space and is spit out through the white hole. The matter then expands to form another universe.

#### (#5) The Quantum Mechanics Idea Of Torsion Explains How A Black Hole Could Spit Out A Universe

When particles spin and interact with spacetime, it creates another property - torsion, or twisting. Poplawski believes torsion is notable only "in extreme environments" - such as those seen in a black hole. So what exactly is torsion? Poplawski likens it to a thin, twisted rod.

If the rod is spacetime, bending it would create curvature (like the gravity of massive objects like the sun), and twisting it would create torsion. Eventually, the rod (spacetime) would be twisted so tightly it would snap out of its twist; the gravity holding the twist in place would no longer be able to resist the strength of the torsion. This would create a "big bounce," flinging the energy from torsion that was converted to matter into a new, baby universe.

"The increasing numbers of particles with spin would result in higher levels of spacetime torsion. The repulsive torsion would stop the collapse and would create a 'big bounce' like a compressed beach ball that snaps outward. The rapid recoil after such a big bounce could be what has led to our expanding universe. The result of this recoil matches observations of the universe's shape, geometry, and distribution of mass."

#### (#3) The Theory Suggests The Big Bang Started With A Black Hole

Before the Big Bang (or the Big Bounce, according to some physicists) there was said to be nothing. But how can everything come from nothing? According to Poplawski, it can't, which makes his theory even more plausible.

Poplawski theorizes this god particle - or the beginnings of our universe, no matter how big or small - came from matter from another universe sucked into a black hole. This matter traveled through the black hole and exploded into the beginnings of our universe when it came out the other side of spacetime.

#### (#7) The Rotation Of Black Holes Feed Into Poplawski's Theory

One way to know for sure if Poplawski's theory works is to look at the rotation of a black hole and its corresponding universe. If a universe was created inside a hole, the universe in question should rotate in a similar fashion as the black hole itself.

While measuring a black hole's rotation precisely is not something we can do just yet, if future findings prove correct, it could lend credence to Poplawski's wormhole theory - that black holes are just passageways from one reality to another.

#### (#4) An Amended Version Of Einstein's General Theory Of Relativity Supports The Idea

Einstein's general relativity describes any and all events in the universe as occurring at one specific point in space and time. Theoretical physicists have long been grappling with combining the theory of relativity, which describes the universe on a larger scale, with quantum mechanics, a theory that examines the universe at its smallest levels, like the atom. By combining the two theories, theoretical physicists would be able to study "quantum gravity," which would help illuminate the mysteries behind certain phenomena, including what happens to matter once it enters a black hole.

While the original theory of general relativity does not support Poplawski's idea, an adaptation of Einstein's theory which takes into account the effects of quantum mechanics does. This adaptation, called the Einstein-Cartan-Sciama-Kibble theory of gravity, takes the important quantum property known as "spin" into account.

Atoms and electrons spin with "an internal angular momentum that is analogous to a skater spinning on ice," according to Poplawski.

### About This Tool

In 1916, the German astronomer Karl Schwarzschild calculated a vacuum solution for the Einstein Field Equations, which showed that if the actual radius of static spherically symmetric star was less than a fixed value, strange phenomena would occur around it, that is, there is an interface -- a “horizon”, into which light can not escape. This value is called the Schwarzschild radius, an “incredible object” named by American physicists John Archibald Wheeler as a “black hole”.

This random generator tool generates 10 entries, introducing 10 theoretical ideas about black holes and the cosmological view, which is very informative and scientifically informed. If you’re a cosmologist or you’re interested in astronomy, you can refer to it.

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