Does spacetime could curved in a "square way"?
Suppose there is a square mass object in the universe (I know its impossible, but suppose...).
Does spacetime will curved in a "square way"?
I believe that not as GR is defined on a smooth manifold.
Am I right?
I do aware that it is impossible to be in a frame with C velocity.
But suppose I could ride a photon (suppose). Outside observers will say that my clock ( on the photon frame) will stop.
From my point of view (riding on the photon), all the universe will be eternity ( time will not run).
Is...