If we are not located at the center of the universe, then when we look out into space are we not sometimes looking towards the center of the universe and at other times towards maybe the edge of the universe. Assume the universe is finite- since we put an age on it, and the fact that it is expanding. Then why can,t we aim our telescopes towards the edge of the universe, if there is one. The hubble deep field pictures supposedly took in photons that had traveled for some 13 + billions years to get to the telescope, what does that mean? Thirteen billion years for the center of the universe, across the diameter, what? Also if we could aim a telescope at the edge, would we maybe detect photons that have only traveled a max of a billion years to reacher the telescopes detectors. This was filled with assumptions, but i think I got the question across.