Quote:
Originally Posted by duga
Einstein's theory of relativity pretty much proved time is not linear.
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It shows that the rate at which time passes from a relative standpoint can change due to gravity, but that it cannot be reversed.
The constant c is the magnitude of the vector in the four dimensions that EVERYTHING travels through space-time at. You, a star, light.
So the faster something travels through space (or the higher the gravity), the slower it travels relatively through time because it's effectively just the same magnitude (c) chnaging the angle. The vector for light is almost(?) completely aligned with travel through space, and not at all with time, hence why it's speed is c while ours isn't.