You always hear this phrase if you watch something about astrophysics ‘Nothing can move faster than light’. But speed is only relative. How can this be true if speed can only be experienced/measured relative to something else?
In: Physics
The explanation that worked best for me: the speed of light is not so much the speed of *light*, but of *causality*: nothing can cause an effect on something else faster than that speed. Since light is not limited by anything (at least in a vacuum), light travels at max speed of causality, ergo, the speed of light is the fastest that anything can go.
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