The question of whether our universe exists in isolation or is part of a multiverse is a topic that spans cosmology, theoretical physics, and philosophy. Our current understanding of the universe suggests that it emerged from the Big Bang. Still, the concept of a multiverse proposes that our universe is just one among numerous others, each potentially governed by distinct physical laws and constants. The idea of a multiverse arises from various theoretical frameworks, including inflationary cosmology and string theory. Inflationary cosmology posits that our universe underwent a rapid expansion phase, leading to the formation of multiple “pocket” universes with unique properties. String theory suggests the existence of a vast landscape of possible universes, each characterized by different configurations of dimensions and forces. The multiverse concept is introduced to address questions about the fine-tuning of physical constants and the inherent probabilistic nature of quantum mechanics. However, it remains a speculative idea without empirical confirmation, continuing to spark scientific exploration and debate.