57 years ago, a man named Hugh Everett suggested the possibility of parallel universes. The idea was that every moment in our universe spawned other universes with alternate configurations. It turns out, he may have been right:

Parallel universes exist

According to the article: “In Everett’s ‘many worlds’ universe, every time a new physical possibility is explored, the universe splits. Given a number of possible alternative outcomes, each one is played out – in its own universe.”

Parallel universes make quantum sense

David Deutsch at the University of Oxford and colleagues have shown that key equations of quantum mechanics arise from the mathematics of parallel universes. “This work will go down as one of the most important developments in the history of science,” says Andy Albrecht, a physicist at the University of California at Davis. In one parallel universe, at least, it will – whether it does in our one remains to be seen.