1. Scientists use the term "multiverse" to describe the idea that other universes may exist beyond our own.
2. Inflationary cosmology is the theory that within a fraction of a second after the big bang, the universe expanded exponentially at an extremely rapid rate. This theory explains many properties of our universe, such as its structure and how galaxies are distributed. It also predicts that inflation could continue indefinitely, potentially creating multiple universes, each in their own "bubble," which may not have the same physical properties as our own.
3. The "many-worlds interpretation of quantum mechanics" is a theory that describes the behavior of matter in mathematical terms. According to this theory, it is possible for timelines to branch into alternate realities where our choices play out differently and lead to very different outcomes.
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