String theory attempts to unify all forces and particles in the universe using vibrating strings. It aims to explain the Standard Model of particle physics, which is incomplete. String theory predicts ...

String theory has long been presented as physicists' best candidate for describing the fundamental nature of the Universe. Yet, at the beginning of the 21st century, it became apparent that most ...

For decades, scientists, philosophers and science fiction writers have been fascinated by the idea of parallel universes — realms that may exist beyond our own, each potentially with its own version ...