Some physicists postulate that there is more than the one universe we call home. Instead, they speculate, there are many, many with differing basic laws.
“How many?”, you may be asking yourself. A couple of cosmologists at Stanford (cited for a bit of credibility) have calculated the number than can be distinguished is: Nobserver ~ 10^10^16, give or take a few. This is all quantum stuff so the number is actually bounded by how many configurations an observer could distinguish and remember in a lifetime.
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