It all starts with a curiosity; What will be left of the universe?

Supermassive black holes will be the last thing left in the universe when everything is cold, expanded and dead, they will be the only thing left, in fact, they have already called that era, the era of black holes, that is if the Universe expands indefinitely. .

There are other theories that say it can rebound, others that space-time can be torn due to the expansion of the universe, but if it were to expand indefinitely, in the end there would only be supermassive black holes left.

White holes are also a theoretical object, we do not know when they can form, in fact, we only know of a possible white hole; We know how a black hole is formed, the collapse of a supermassive star, but you can tell me why a white hole will suddenly emerge in a place in empty space, what has to happen in that place in space for a white hole to emerge. .

For a black hole to emerge, there must be a large concentration of mass in this case of a supermassive star that collapses or the primordial black holes that would occur when there was the Big Bang, because there was also a large concentration of mass, but a white hole why a white hole would suddenly open anywhere in the universe, we do not know and the only place where we know that it opened almost out of “nothing”.

The only place in the universe and space-time, to think of the universe not in space but also in time, the only place where it seems that something from Nothing was opened is the Big Bang, so if there was, there is a white hole. The only thing we can know or intuit could be the Big Bang, what I just mentioned is a theory held by some regarding white holes. It could also be that white holes are not in our universe but in another different universe in a mirror universe.

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! The truth will set us free and science is the one that is closest to the truth!