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A Problem With The Relativity of Time
According to Einstein's Theory of Special Relativity, time slows down more and more as a moving object reaches closer to the speed of light, at which point time stops completely, mass becomes infinite, and space contracts to a point in the direction of travel (all points come closer together). Following this reasoning, it has been popularly suggested, and even supposedly proven, that if a spaceship were to leave Earth and travel out into space at near-light-speeds for a period of time before returning again, there would be a measurable time discrepancy between the crew on the ship and the people on Earth, with the crew having aged more slowly than the people on Earth. We will refer to this as scenario A, where we have only two points of reference to contend with - that of Earth and that of the spaceship. This scenario is often used in explaining the strangeness of spacetime as it is understood within the Einsteinian framework.