The nature of our visible universe is a topic of scientific inquiry and speculation. Our visible universe refers to the portion of the cosmos that we can observe, which is limited by the distance that light has had the opportunity to reach us since the Big Bang, given the finite speed of light.
As for whether our visible universe is part of an infinite multiverse or if it represents the entirety of what exists, it is currently an open question without a definitive answer. The concept of a multiverse suggests the existence of multiple universes, each potentially having different physical laws, constants, or properties. These universes could exist beyond what we can observe, either disconnected or existing in parallel to our own universe.
While the idea of a multiverse is supported by certain theoretical models within physics, such as inflationary cosmology and string theory, direct observational evidence for the existence of other universes is still lacking. Exploring the multiverse hypothesis and understanding its implications are active areas of scientific research and investigation.
It's important to note that our current understanding of the universe is limited by the information and observations available to us. As our technology advances and our knowledge expands, our understanding of the nature of the universe may also evolve. Therefore, the question of whether our visible universe is part of a larger multiverse or represents the entirety of existence remains an open and fascinating area of scientific exploration.