Hi everyone. I was just wondering what is space. I know what it is but rather what my question should be is "Is our 4 Dimensional spacetime raped around anything?" I have heard that it is curved around a higher dimension, is it true? And also was wondering why there is no center to the universe? I asked this question to my teacher and he replied to my question with another question which was "If an ant is around a beachball and we tell it to go to the center of the ball will it be able to do so?" But what I don't get is that the ant is only able to move in 2 dimension (x,y) but in reality we are able to move in 3 dimension (x,y,z) and depending on our velocity through (t). so why cant there be a center to the universe?