The bubble universe theory

The bubble universe theory, also known as the bubble universe theory or spacetime bubble theory, is a hypothesis in theoretical physics that suggests that our universe could be just one of many "bubbles" or separate regions in a multiverse.

According to this theory, each of these bubbles would be a universe with its own physical laws and properties, and would be separated from each other by vast distances in extra dimensional space.

These bubbles could have formed during an event known as cosmic inflation, a rapid expansion of the early universe.

However, it is important to note that the bubble universe theory is still a speculative idea and has no solid empirical evidence to support it.

It is part of a constantly developing and debated field of study in theoretical physics.