"On Monday, scientists discovered 'smoking gun' to expanding universe. They found gravitational waves produced moments after the Big Bang. The discovery points to powerful type of inflation of the early universe. If space-time goes on forever then it must start repeating at some point. This suggests the cosmos is constantly giving birth to parallel universes…. In this scenario, there could be multiple versions of you in different universes – ones doing exactly the same thing, and others where your 'twin' has made completely different life choices."
What a Worlds