Yes, relativity, it sounds as if the name implies reality, but so much on unproven theory.
I think the part about the past is only based upon effects of the past, like the light from space, there is no way to go back and see what happened in those times, it was the present a long "time" ago, even if we could go the speed of light, there is no catching back! We look at the past of the present everywhere, everything here now was build upon the changes of a present that no longer exists anywhere. It seems that Einstien's ideas are partially correct, but not close to reality, much development is needed, like getting away altogether with this time warp fairytale and going ahead and building on the parts that are correct, such as the one dimension of time/space. What we like to call 3 dimencional is our way of explaining volume, and supports the time stuff. So the dimension is volumeous, not planes, those are our own explanitory perceptions. Partical thoery is based upon current knowledge, it is not how it looks/is in reality reality, just like old space light.