Our universe is a magical place, constantly evolving and expanding. It encompasses everything the human race knows of, including fascinating physical structures, such as stars, planets, galaxies, black holes, and dust clouds, and more abstract concepts like light and time. The Milky Way galaxy itself is approximately 100,000 light years across, and this galaxy is one of the billions of galaxies existing in the universe. In the midst of this vastness, humans inhabit one planet of the unimaginably large number of celestial bodies in our universe and have always questioned the magnitude of all existence. Despite mankind’s certainty of the existence of our universe, there remains a question that has yet to be answered: is our universe alone?
The creation of the multiverse theory serves to answer this intriguing question. According to this theory, our universe is surrounded by numerous other universes, and, together, these universes consist of everything that exists, including time, space, matter, and energy. Furthermore, all universes can co-exist at the same time, resulting in various possibilities regarding existence.
As of now, there is no clear indication of life outside of our planet. Although several celestial bodies have been found that could potentially support life, such as Kepler-438b and Kepler-442b, there is no evidence that life actually exists on these planets. What would the validation of multiverses reveal about extraterrestrial life? In reality, there is a strong relationship between the multiverse theory and alien life. One of the reasons our universe can host life is a small amount of dark energy; extrapolation of this concept to other universes on a large scale could signify life outside of Earth. Humans could exist in other universes. If the evolution of the human race occurred in one universe, given similar circumstances, it could theoretically happen in another. In fact, one hypothesis of the multiverse theory, known as the Many Worlds Interpretation (MWI), is connected to this idea. According to the MWI, an infinite amount of parallel universes exist, with a universe for every possible series of events. This interpretation indicates that there are an innumerable amount of universes, each with a different history. Therefore, this theory stipulates that humans could exist in many other universes, disproving all convictions of human uniqueness.
Overwhelming support of multiverses would alter the lives of humans globally, augmenting humanity’s conception of space and undermining hundreds of scientific notions regarding the cosmos. The field of cosmology would change forever with such a discovery. Given confirmation of the multiverse theory, man would once again look up to the stars, and the dream of discovering the unknown would live on.