Five reasons why parallel universes exist

The idea of the Multiverse (that is, many universes existing in parallel) has occupied the minds of scientists since the mid-20th century. This theory has both opponents and ardent defenders (for example, Sheldon Cooper from the sitcom "The Big Bang Theory"). But what generally makes serious people consider such an opportunity? Is there really a chance that somewhere in a parallel universe you sit different and you read the same text, perhaps with slight changes? Surprisingly, there is some evidence that fully confirms this concept. Or not, this is how to look.

So what does the idea of parallel universes prove?

Shroedinger `s cat

Schrödinger's famous thought experiment demonstrates that in quantum mechanics there are situations when elementary particles - quanta - can exist in two positions at once. Because of this, the unfortunate cat inside the box can be both dead and alive, until you open the lid - depending on how you view this particle. How this is possible in the physical world is hard to understand. Therefore, the experiment is called a paradox.

The multiverse eliminates this problem by explaining exactly how this is possible. There are simply two realities: everything is in order with the cat. And in the second ... But let's not talk about sad things.

Infinite universe

The infinity of the universe is difficult to realize, but in general, scientists seem to have come to terms with it. This property of the universe also proves the probability of the existence of parallel universes. Remember the hypothesis that if an infinite number of monkeys has an infinite amount of time to knock on the keys, then sooner or later they will print “War and Peace”? So it is with matter: if you create new objects an infinite number of times, sooner or later they will begin to repeat themselves and create almost the same worlds as ours. This will be the same parallel universes.

Big explosion

In addition, how the Universe can be infinite, people are interested in the question of how it appeared at all. What caused the big bang?

The multiverse may try to explain this. Assuming that parallel realities exist - yes, in parallel! - then they may not touch at all, being next to each other in dimensions that are inaccessible to our senses (we know only three dimensions, plus the fourth - time). The accidental contact of universes can lead to disastrous results, causing the Big Bang. Thus, parallel universes are constantly updated, constantly restarting each other.

Time travel

Yes, time travel is not possible. But if we consider only our universe! In this case, the time traveler’s paradox is inevitable, described many times in science fiction and cinema. It is worth accidentally crushing a butterfly, pushing a person or doing something just as insignificant in the past, and in the future this will lead to enormous changes.

Parallel universes remove this problem. Once in the past, you find yourself in a parallel reality in which events take place that have long passed for your reality. And changes in her change her, but not your world. Although butterflies still do not need to be crushed.

Parallel universes fit into the logic of knowledge

Studying the world around him for a person throughout his history is a struggle with the human ego. At first, people thought the Earth was the center of the universe. Then they agreed to the Sun, in passing sending several scientists to the bonfire. Further - more: already the Sun is just a tiny star on the periphery of one of the billions of galaxies. Following this logic, it is likely that we ourselves are not unique and are only one of an infinite number of variants of us that exist in a parallel universe. It is hoped that at least somewhere parallel we lead a healthy lifestyle and do not commit stupid things.

Based on materials from HowStuffWorks.com