The idea of another universe outside our own is an interesting question that falls under the multiverse theory. The multiverse is a concept that has been explored in both physics and philosophy.
Although there is no direct evidence yet, several scientific theories suggest that multiple universes may exist.
Theories that support multiple universes
1) Cosmic Inflation Theory:
This theory suggests that the Big Bang may not have been a one-time event. Different regions of space may have expanded at different rates, creating "bubble universes," each with its own unique laws of physics.
2) Quantum Multiverse:
According to quantum mechanics, whenever a choice is made, reality splits into multiple outcomes. This suggests that parallel universes exist where different versions of each reality occur.
3) String Theory Multiverse
String theory proposes that there are additional dimensions beyond the 3D space we experience. It predicts that there could be multiple universes with different fundamental forces and atoms.
4) Brain World Theory
According to this theory, our universe could be like a membrane floating in a higher-dimensional space.
Other universes could exist as parallel membranes that are invisible to us but are possibly interacting through gravity.
