The Earth may be inside a massive cosmic black hole.

A study is shaking the world of astrophysicism: our universe may not have started with the Big Bang, but may actually be the result of a 'cosmic bounce' from inside a supermassive black hole.

Báo Tuổi Trẻ•09/06/2025

The Earth may be inside a massive cosmic black hole - Image 1.

If our universe truly lies within a black hole, and other black holes are creating other universes, then the reality we know is only a small part of an endless network of universes. - Photo: Womanias

This bold hypothesis was put forward by a research team led by Professor Enrique Gaztañaga of the Institute for Space Sciences , University of Barcelona (Spain). The work was recently published in Physical Review D, one of the world's leading and most prestigious physics journals.

Controversial hypothesis: The universe is cyclical, not a beginning.

Accordingly, instead of emerging from nothingness like the traditional Big Bang model, our universe is the result of a cosmic cycle with no beginning or end. Specifically, the preceding universe, called the "mother universe," after undergoing a contraction phase, did not completely collapse but bounced back due to a quantum effect, creating a new universe from within a black hole.

The key point in Gaztañaga's model is the application of the Pauli exclusion principle, a fundamental law in quantum mechanics. This principle states that two fermions (such as electrons, neutrons, etc.) cannot exist in the same quantum state.

This means that when the parent universe contracts to an extremely high density, quantum repulsion between particles will prevent a complete collapse into a singularity, thereby causing a "bounce" and expansion, forming a new universe.

Unlike many previously proposed theoretical models of the universe that required hypothetical particles or unverified force fields, Gaztañaga's model falls entirely within the framework of Einstein's general theory of relativity and widely accepted quantum physics.

Are black holes not death traps?

If this hypothesis is correct, then black holes are no longer "places where everything disappears forever," but rather "cosmic wombs" from which new universes are born. This also means that we, the beings in this universe, exist inside a black hole of our mother universe.

This perspective reverses the long-held view of black holes and the Big Bang. Instead of an absolute beginning from a singularity, it is a link in a chain of continuous rebirth of successive universes.

What makes this model particularly noteworthy is its empirically verifiable nature. The research team made several specific predictions: the universe must have very little positive spatial curvature (meaning it's not perfectly flat like many traditional Big Bang models) and a small but measurable cosmological constant.

These two indicators can be fully verified by upcoming space observation missions such as the Arrakihs satellite and the European Space Agency's (ESA) Euclid telescope. If these instruments confirm the parameters predicted by the Gaztañaga team, the "black hole universe" model will become a turning point in the history of physics.

Major changes in astronomy and philosophy

If our universe truly lies within a black hole, and other black holes are creating other universes, then the reality we know is only a small part of an endless network of universes.

Beyond mere physics, this hypothesis raises profound philosophical questions: If the universe is an infinite series of “lives,” what do time, space, and life mean in the larger picture? What does this eternal repetition suggest to the question: “Where do we come from, and where are we going?”

The story of the origin of the universe continues to be written every day. Although much evidence is still needed to confirm it, the model of the universe bouncing back from a black hole is a remarkable step forward in our journey to understand the universe.

In the not-too-distant future, scientists may find the ultimate answer: Was the Big Bang truly the beginning, or merely a chapter in the endless novel of the universe?

MINH HAI

Source: https://tuoitre.vn/trai-dat-co-the-dang-o-trong-mot-ho-den-vu-tru-cuc-lon-20250609220752867.htm