With E=mc2 in respect to the twin paradox and the speedlimit of light.
If the entire universe is relative to the speedlimit of light then the traveller is not violating the speedlimit of light in the expansion of the heavens if its only the observer that has moved forward in time.
P.S. Maybe string theory will prove E=mc2 fits string theory better than atomic theory? Though a whole lot of energy was released through the atomic bomb thru aggitation? Heck there is a whole lot of energy just when one alpha particle is expelled. To say no motion when neutrons have momentum and energy as do protons, etc...Think when they say E=mc2 has no momentum energy is just a play on words like an Enron accountant cancelling out until he has nothing because a whole lot of radioactive elements are decaying and the energy given off thru decay is caused by mass having momentum and thats energy. There is talk of making batteries for labtops from the energy given off thru the momentum of radioactive decay.
Edited by johnfolton, : No reason given.