At the same time of every event, countless universes will be created. So in every Planck time in our universe, one thing will happen in a certain way, while in countless other universes, it will happen in a completely different way, and the way of events in each universe is completely different. Therefore, if the multiverse theory is correct, it means that there has been a Planck-time universe since the existence of our universe. (How many Planck times have passed since the existence of the universe, and how many universes are there)
The multiverse is a set of hypothetical and diverse universes, which together constitute everything that exists now: the whole universe, time, matter, energy, information, physical laws and constants that describe them. Every different universe in the multiverse is called. Parallel universe? Other universes? Or? Alternate universe? .
A parallel universe, also known as. A plane dimension? Alternate universe? Or? Alternative reality? It is an imaginary independent plane, which exists by itself. The sum of all potential parallel universes that constitute reality is called one? Parallel universe? . These three terms are usually synonyms and can be interchanged in most cases. Sometimes? Alternating universe/reality? This term has an additional meaning, which means a change that our own time overlaps with the history of the same name.
Parallel universe? This term is more general and universal, and has no implicit connection or lack of connection with our own universe. The unified laws of nature in every universe are different. For example, a universe with no laws of motion is usually regarded as a parallel universe rather than a fact or concept between the fantasy world and the earth.