In the Many-Worlds Interpretation of quantum mechanics, every possible event in the universe is realized in a separate universe. This leads to an infinite number of parallel universes, each with their own version of history.
Imagine the multiverse as a quantum brunch buffet, where every possible omelette exists in a separate dimension.
But don't worry, it's not all good news. The heat death will get you in the end, no matter which universe you're in.
Learn more about Eternal Inflation