A new theoretical proposal that is controversial among the space physics world is that our universe did not form from the Big Bang explosion, but was actually the result of a "space Bounce" that occurred inside a giant black hole.
This study was conducted by Professor Enrique Gaztañaga and colleagues at the Institute of Space Sciences, University of Barcelona ( Spain), published in the journal Physical Review D.
Unlike the traditional Big Bang explosion model, which suggests that the universe started at a strange point, the new model suggests that the universe is a circulating chain with no starting point or ending point. Accordingly, a mother universe has gone through a period of contraction, but instead of collapsing completely, it has bounced back due to the quantum effect - thereby giving birth to the universe we live in.
The center of the model is the application of Pauli elimination principles - a principle in quantum mechanics that states that two fermion particles cannot coexist in a quantum state. When the material density reaches the maximum level, the push between these particles will prevent the collapse at strange points, creating a bounce and expansion.
It is noteworthy that the model does not require unverified particles or forces as many previous theories have, but is completely within the framework of Einstein's broad relativity theory and recognized quantum laws.
If this hypothesis is correct, black holes are where new universes form. Thus, we may be living in a universe inside a black hole of a larger universe.
In particular, this model can be experimentally tested. The research team made two predictions: The current universe must have a very small curve in the solar sky and small, but measurable cosmological coefficients. Devices such as the Euclid Tenses and Arrakihs satellites of the European Space Agency can confirm these indicators.
If validated, the reverse cosmic model will open up a new direction for physics and raise profound questions about the nature of time, space and life in the limitless network of the universe.