I mean it is a theory in physics so it is actually something that could exist. The idea of where does our universe end, what is beyond the know universe that we can see. Is the universe like a bubble and next to it is another universe etc. etc. They are all grand concepts that can mix physics and philosophy really. I like the idea that we have other versions of ourselves in other universes. I wish our lives were more than an imperceptible moment in time in the grand scheme of the age of the universe and that I could be around in a few thousand years to see what we have learned.
Do we live in a multiverse? Maybe, maybe not.
www.livescience.com
The concept of the multiverse arises in a few areas of physics (and philosophy), but the most prominent example comes from something called inflation theory. Inflation theory describes a hypothetical event that occurred when our universe was very young — less than a second old. In an incredibly brief amount of time, the universe underwent a period of rapid expansion, "inflating" to become many orders of magnitude larger than its previous size, according to
NASA.
Inflation of our universe is thought to have ended about 14 billion years ago, said Heling Deng, a cosmologist at Arizona State University and an expert in multiverse theory. "However, inflation does not end everywhere at the same time," Deng told Live Science in an email. "It is possible that as inflation ends in some region, it continues in others."
