The universe appears to have three space dimensions because of our size. The smaller an object is the less dimensions it has. If we where 4th dimensional beings we would probably be millions of miles in height looking into the known solar system with a microscope as if it was a marble. Time is the same everywhere in the universe it just seems different because it is controlled by gravity. Depending upon how far away you are from the sun. The closer you are the faster you move. The further away you are the slower. Time dosent actually exsist. Only the ability to move within space exsists, controlled by gravity.