Question: is there other dimentions

Hussain Jaffery answered on 16 Nov 2015:

We live in the three dimensions of space, and the fourth dimension of time. According to String theory, which provides an explanation for all of the forces of physics in the universe, there may be many more dimensions: up to 10 or 11, but this may be very difficult to show and prove.

Extra dimensions don’t necessarily mean that there are hidden parallel universes, they could be dimensions that are tightly rolled into each other at a very small scale, and hard to unravel.