Science fiction writers love multiverses, and so do many scientists. In science fiction stories, characters step through a portal and emerge in a parallel or inverted world. In the minds of some physicists, multiple universes exist in what is known as the multiverse hypothesis. According to that hypothesis, an almost infinite number of universes exist, each with radically different physical laws and properties. There is no evidence for this, and it is impossible to prove or falsify. So, what is the reason for a multiverse hypothesis?
Agnostic scientists who theorize a multiverse do so not because of evidence but because they cannot explain the apparent fine-tuning of the universe. Why are the particle masses and force strengths in our universe perfectly fine-tuned for us to be here? Slight changes in any of those factors would make it impossible for life to exist and likely for a universe with stars and planets to form.
Speculation about “bubble universes” in a frothing multiverse is pure science fiction at present, so what about another option? Some have proposed an idea based on quantum mechanics. This theory of particle physics states that particles can exist in a “superposition” of possible states until someone measures the particle’s position, at which point it collapses into a single state. It’s difficult to see how this could explain alternate universes, since quantum theory deals with the very small, not entire universes. That brings us back to the reason for a multiverse hypothesis. But, wait! Isn’t there another possible explanation for the fine-tuning of our universe?
Yes, there is another possible explanation for the astonishingly fine-tuned parameters of our cosmos. However, it is one that many stubbornly refuse to accept, or even consider. What about the possibility that the universe was designed by an infinite Intelligence that exists outside of time and space? Isn’t that a more reasonable explanation for the precise design that makes our existence possible?
Quantum fluctuations can’t explain it. Even an infinite number of universes could not explain how we happen to be lucky enough to live in a universe with the right combination of all the exact factors needed for life. Luck and chance are not scientific explanations. Even if there were an almost infinite number of universes, there would still need to be an explanation of how they originated. The design we observe in the cosmos can best be explained by a Designer. Isn’t the only reason for a multiverse hypothesis the desire of skeptics to avoid the most obvious and logical explanation?
— Roland Earnst © 2026
Reference: Science News magazine for February 2026, pages 62-63, and sciencenews.org