National Security Secrets
#47. We experience time as the expansion of space - that's why the arrow of time only moves in one direction.
But there's no hard and fast reason that space can't also contract and the arrow of time move backwards. The math seems to support it at least (which I can't do).
Working from this as the starting point, one could reason that as an object's velocity increases it begins traversing space at a rate which "cancels out" that rate of expansion. If any amount of expansion is canceled out this way then time should slow down.
We know from quite a few experiments that as an object's velocity increases towards the speed of light both it's mass increases and time experienced - relative to an observer - does slow down.
But why does moving quickly enough to skip over the expansion of space increase something's mass?
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