Imagine parallel universesexist. How many do you think? And are they very different from the universe in which we live? The outstanding British scientist Stephen Hawking was looking for answers to these and other equally provocative questions. Remember the series "Journey to Parallel Worlds"? In it, a physics student conducted experiments on the study of gravity, but instead of a gravitational machine, he accidentally invented a portal to parallel universes. Together with his friends and a musician who accidentally entered the portal while moving, the student began his journey through countless parallel worlds.
Stephen Hawking, alas, did not invent such a portal. However, in collaboration with theoretical physicist Thomas Hertog of Leuven University (Belgium), Hawking came up with a way that will allow humanity to answer the burning question - are there parallel universes?
What is a multiverse?
First person implying bya multiverse with an infinite number of parallel or alternative worlds, has become science fiction writer Michael Moorcock. In a saga called The Eternal Warrior, Murcock described about two dozen incarnations of the main character of his works. And the term itself was invented in 1895 by the philosopher and psychologist William James, who put a completely different meaning in it, namely, the plasticity of perception of reality (we have no idea what it is about).
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Despite being a sci-filiterature, the idea of parallel worlds was previously described by many authors, the Murcock saga breathed new life into the theory of alternative worlds. Since the 1970s, only the lazy did not write about the multiverse. Soon, scientists joined the science fiction.
Supporters of the multiverse theory todayare many famous scientists. Among them are American astrophysicist and popularizer of science Neil Degrass Tyson, British theoretical physicist Brian Green, Swedish-American cosmologist and astrophysicist Max Tegmark, as well as theoretical physicist Michio Kaku, who wrote a book about parallel worlds. In it, Dr. Kaku reflects on the structure of the Universe and talks about what modern physics does.
Despite such eminent supporters, the theorymultiverse - the cause of controversy in the scientific community. We can think as much as we want about countless versions of ourselves living in parallel worlds, but the fact is that no one can prove or disprove this yet. Today, thanks to the dying work of Stephen Hawking, we finally got the opportunity to find out the truth.
Note that in their scientific work, physicists rely on the prevailing theory of the Big Bang.
Big Bang Echo
Hawking and Hertog offer to send to spacedeep space probe. As planned by scientists, a special detector should be installed on the spacecraft to collect information. But where are they going to look for her?
The Big Bang gave rise to a universe of nearly 13.5billion years ago. Since then, it has been continuously expanding and cooling. Stephen Hawking and Thomas Hertog developed a theoretical model in which the Universe expands indefinitely and presented it as a two-dimensional hologram.
So according to Stephen Hawking and Thomas Hertog, the multiverse looks like.
When scientists started work, both believedthat all parallel universes are very different from each other. But in the course of the study, they came to the conclusion that most likely the same physical laws operate in all parallel worlds, so they differ little from each other.
It turns out that if this morning in our universe youdrank coffee, then in parallel they could well drink orange juice. Apparently, there are no unusual life forms there. Just the other you and orange juice. Provided that you exist in this parallel universe, of course.
But back to the Big Bang. Among the huge amount of energy and radiation that appeared as a result of the explosion, relict radiation arose in the first seconds after it. Relic radiation (often referred to as microwave background radiation) is believed to envelop our entire Universe. In this way, it can tell us a lot about her story.
Stephen Hawking and his co-author believe thatmultilayer, if it exists, was supposed to leave a trace in the relict radiation. It will have to be detected by a special detector mounted on the spacecraft. Or not discover - which, in turn, will mean that no parallel universes exist.
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