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Relativistic speeds

We thing the speed of light is fast. But it really isn't when put into a meaningful context. For all mundane purposes it's other instantaneous or just doesn't matter at all.

By absolute comparison the speed of light is much, much faster than for example the speed of sound. But for us the speed of sound is actually really fast. Fast in a sense we can still easily comprehend. Fast in a sense that we can actually for example travel at that speed, and beyond. Even though only a small number of people have actually done so.

In normal situations the speed of sound can also be considered instantaneous. There is no (noticeable) delay perceiving sound for example when having a conversation with another person. But we can still observe the delay in quote mundane situations like when a lightning strikes several kilometers away. We aee the flash "instantaneously" but the sound can take several seconds to reach us.

Even in bigger scale of things when we could theoretically hear a sound from far away it can still travel that distance in time perceivable within a human lifetime. Like for example the sound our sun makes. The only reason we can't hear it is the fact that there is vacuum between us and the sun (which is a good thing as it would be as loud as a jet engine). Despite the distance the sound would "only" take 13 years to reach us from the sun.

But light. While we think it's instantaneous, the light is actually crawling through the space between distances that really matter. It takes years for it to reach us even from the closest stars outside pur solar system. And it can take billions of years for it to cross the universe. That's pretty dlow for something that is travelling at the absolute speed limit of the universe.