A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have formed inside a colossal black hole residing in a larger, parent universe. The Big Bang theory, along with Einstein’s general relativity, has successfully explained major cosmological phenomena, including the cosmic microwave background, the universe’s large-scale structure, and its accelerating expansion often linked to dark energy.
Not exactly new. I remember reading about such a theory years ago, where they speculated that the “inside” of a a black hole could resemble a universe, but with one dimension less, and in return, our universe could be the “inside” of a black hole in a four-dimensional universe.