Parallel Universes Exist In Invisible Dimensions

Physicists have a “theory of everything”, by which major extra space dimensions could exist in parallel universes.

In the ultimate “theory of everything”, Einstein’s relativity theory is combined with physicists’ standard particle model. The tiniest units are strings, that can produce all force- carrying particles and atomic building blocks. But the theory also has a bizarre effect: the four known dimensions (height, length, width, and time) are not enough. The strings can only produce all the particles in a space with at least 10 dimensions. In most theoretical models, the extra dimensions are tiny and hidden inside electrons and quarks. In other models, they are as large as the universe and form parallel, invisible worlds around us. Only gravity can travel between dimensions.