Life on Earth is only one version, and it may be unique in other planets of other solar systems across our galaxy as the accurate combination of elements, the qualities of our orbit, sun and moon are different. No other planet would be exactly the same as Earth. […]
According to an idea called the theory of eternal inflation, it’s still going on somewhere. The idea says that separate parts of space too far away for us to observe have continued to inflate. But other pockets have stopped inflating, too. So you end up with isolated bubbles of space —whole other universes— in a giant, ever-inflating multiverse.