A bold new theory in theoretical physics is stirring scientific circles: what if our universe is not the only one—and was, in fact, born inside a black hole from another, larger universe?
This idea, proposed by a growing number of physicists exploring quantum gravity and cosmology, reimagines the birth of our universe not as a standalone Big Bang, but as a continuation of a cosmic cycle. According to the theory, black holes may not be the final destination for matter and energy, but gateways to entirely new universes. In this view, the core of a black hole—a region called the singularity—doesn’t simply collapse into nothingness. Instead, it rebounds, forming a new space-time realm on the “other side.”
From Black Hole to Big Bang
The traditional Big Bang theory describes the universe as having exploded from an infinitely dense point around 13.8 billion years ago. But this model struggles to explain what caused the explosion—or what came before it.
Enter the black hole bounce theory.
Physicist Nikodem Popławski of the University of New Haven is one of the prominent voices exploring this possibility. He suggests that every black hole may contain a new universe inside it, and our own universe might be the result of such a process. The mechanism involves a hypothetical substance called “torsion,” a property in Einstein–Cartan theory, which prevents matter from compressing to a point and instead causes a bounce—a new Big Bang on the other side.
Why It Matters
If our universe is the interior of a black hole, several long-standing cosmic puzzles could start to make sense:
- The Big Bang Paradox: The theory provides a physical cause for the Big Bang rather than relying on philosophical or purely mathematical origins.
- Multiverse Possibility: It implies a multiverse—an infinite tree of universes born from black holes, each with potentially different physical laws.
- Time and Space Reimagined: Inside black holes, time and space behave differently. This could help explain cosmic inflation and the arrow of time in our universe.
- Black Holes as Cosmic Wombs: Instead of being death traps, black holes might be the most creative objects in the cosmos.
The Limits of the Theory
This hypothesis, while elegant, remains unproven. It’s nearly impossible to test what lies inside a black hole with current technology, and there is no direct evidence yet of universes being born this way.
However, as our understanding of quantum physics, general relativity, and space-time deepens—especially through observations of gravitational waves and black hole collisions—scientists may one day find hints that support or refute this extraordinary idea.
For now, the notion that we live in a universe formed within a black hole doesn’t just reshape cosmology—it changes how we think about existence itself.
