Question: Do you know in what dimension do we live in? Is there any way to observe the dimensions?

Kathryn Burrows answered on 12 Jun 2018:

Typically we say that there are three space directions, that it we can move left/right; forward/back; up/down. People often talk of a fourth dimension being time. That as well as moving about in space, we also travel forward in time at a rate of one day per day! There are some really abstract mathematical theories such as string theories which try to explain the universe by adding extra dimensions but I am not an expert in those.