The weird thing about spacetime is that it isn't constant. If you go fast enough, you experience time dilation--less time passes for you than the world around you. It's been clocked by jet fighter pilots who break the sound barrier. Over sufficient time and distance, space would begin to compress as well. Moving at lightspeed will compress space relative to your velocity such that a photon traveling from the sun at near-lightspeed would, if it had eyes, observe our planet to be a disc about 60 feet thick. As it turns out, the material universe is extremely dynamic and relative and not at all the static, constant edifice we thought. The double-slit experiment established how subatomic particles are affected by the observation of the observer. What all of this comes down to is exactly what many of the ancient philosophers already suggested--true reality is beyond the limited scope of finite man to grasp. The Creator of all reality is God, and we hold that God knows the end from the beginning. He has described one possible end as Hell and another as Heaven; Heaven is where He is while Hell is where He is not. David had such faith that God would be with him even in Hell--such faith! Trying to frame those invisible ends of ontological being in geographical terms would be an exercise in futility because the very word "geographical" puts Earth ("Geo") at the center of the premise, precisely where it does not belong. We want to be wherever God is, and thanks to Jesus, our Emmanuel, God is with us, and that ought to be our focus. Wherever the King is, Heaven shall be there also.