The concept of the multiverse is distinct from the universe, although the terminology can vary depending on the context and interpretation. Let's clarify the definitions:
Universe: In the most common usage, the universe refers to all of space, time, matter, and energy that exist. It encompasses everything we can observe, from galaxies and stars to planets and living beings.
Multiverse: The multiverse, on the other hand, refers to the hypothetical idea that there may be multiple universes, each with its own set of physical laws, dimensions, and properties. These separate universes could exist alongside or independent of our own universe.
In this sense, the multiverse is not considered part of the universe as it refers to a collection of multiple universes, possibly with different characteristics. The concept of the multiverse is often explored in theoretical physics and cosmology to explain certain phenomena and reconcile various theories, such as inflationary cosmology and string theory.
It's important to note that the multiverse is a speculative concept that has not been confirmed or directly observed. It remains a subject of ongoing scientific investigation and theoretical exploration.