The question makes no sense because the terms aren’t well-defined. It’s like asking “are there other sets of integers besides the ones we know about?” There’s only one set of all integers. We know what the integers are by definition. If something looks like an integer, it is an integer. Similarly, you can’t ask about the existence of something which is not part of the universe, because if something exists, it is part of the universe.
The “Many Worlds” interpretation of quantum mechanics proposes that there are other universes separate from our own, perhaps even an incredible number of them if there’s one for every quantum interaction.
It’s consistent with our mathematical understanding of reality. But scientifically, it’s still an open question on whether the hypothesis is testable or whether those other potential universes will ever be observable.
https://youtu.be/z-syaCoqkZA?si=5_KJB2rcscjhD9_e
The question makes no sense because the terms aren’t well-defined. It’s like asking “are there other sets of integers besides the ones we know about?” There’s only one set of all integers. We know what the integers are by definition. If something looks like an integer, it is an integer. Similarly, you can’t ask about the existence of something which is not part of the universe, because if something exists, it is part of the universe.
The “Many Worlds” interpretation of quantum mechanics proposes that there are other universes separate from our own, perhaps even an incredible number of them if there’s one for every quantum interaction.
It’s consistent with our mathematical understanding of reality. But scientifically, it’s still an open question on whether the hypothesis is testable or whether those other potential universes will ever be observable. https://youtu.be/z-syaCoqkZA?si=5_KJB2rcscjhD9_e