When someone mentions “different dimensions,” we tend to think of things like parallel universes — alternate realities that exist parallel to our own, but where things work or happened differently.

We experience three spatial dimensions in nature: length, width and height. In addition, we perceive time as a fourth dimension. But some theoretical physicists have speculated that “extra” spatial ...

String theory is a purported theory of everything that physicists hope will one day explain … everything. All the forces, all the particles, all the constants, all the things under a single ...

It can be tempting to assume that your intuitions about three-dimensional space carry over to higher-dimensional realms. After all, adding another dimension simply creates a new direction to move ...

Physicists developing a consistent theory of quantum gravity currently disagree on the universe's total number of dimensions, proposing either 10 or 11. The classical concept of space-time is replaced ...