According to string theory, there are at least 10 dimensions of space, most of which are impossible for humans to perceive.

Oh, and this imagined world has 11 dimensions, not the four dimensions – up/down, left/right, backwards/forwards and time – we have in our so-called real world.

To summarize, string theory says that there are 11 dimensions. We know of 4 physical dimensions, and there are in addition 7 other dimensions.

In order for the math to work, string theory requires that there be 10 dimensions: nine of space and one of time.

In order for the math to work, string theory requires that there be 10 dimensions: nine of space and one of time.

Theorists have been working on the idea since the 1960s, and one of the first things they realized is that for the theory to work, there have to be more dimensions than the four we're used to.

Physicists have a new scenario of the universe's expansion at the Big Bang that may explain why our universe has three large spatial dimensions.

Researchers in Japan have developed what may be the first string-theory model with a natural mechanism for explaining why our universe would seem to exist in three spatial dimensions if it actually ...

“I think of myself as a seer”, writes Lee Smolin in this no-holds-barred attack on the science and sociology of string theory. “Why are string theorists not seers?” In my opinion, toe ...

Physicists have a new scenario of the universe's expansion at the Big Bang that may explain why our universe has three large spatial dimensions.