In the grand body of the universe and even our own solar system the speed of light is incredibly slow on the cosmic scale. Why does it have this speed limit ? It is theoretically possible to go faster than light ? Or is light just the fastest thing we have observed thus far ?
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It’s not slow on a cosmic scale – from the photon’s perspective it literally takes 0ms to travel any distance. I’d say that’s as fast as it can get! If you observe the photon from Earth it might seem slow, but the photon experiences all time as instant.
Light travels at that speed because it’s the speed of causality, as in: the fastest something can happen as a result of something else happening.
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