Since the Universe is defined as "everything there is", it cannot be inside anything. We know nothing about the Universe in toto. Science can only address the observable universe, which is variable according to the location of the observer. Of course, all observers we know about are in one general location.What are the chances of our Universe being inside a giant black hole? What's your argument in denial or support of this statement?
CatThe observable universe is a ball-shaped region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time, because the electromagnetic radiation from these objects has had time to reach the Solar System and Earth since the beginning of the cosmological expansion.
.the map is not the territory