The standard model of cosmology may be the best explanation we've got for why the universe is the way it is and how it all came to be. But it's not the only explanation.

Enter black hole cosmology. It's a radical idea which proposes that the Big Bang — the rapid unraveling of an infinitely dense point, believed to have given birth to the cosmos as we know it — actually took place in a black hole, which itself formed inside a larger "parent" universe.