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Why is light so fast?

Updated: 12/8/2022
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16y ago

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It's not really very fast (it takes thousands of years to cross small pieces of the galaxy). The rest of us are just really slow. Actully, since it's an energy state instead of a physical state, it's a lot easier to move fast. Einstein's real question was, "If I'm sitting on a train that's traveling at the speed of light, and I look at my face in the mirror, what would I see?" The answer is that as things approach the speed of light, time slows down for them (that's his famous Theory of Relativity). So for anything traveling at the speed of light, time does not mean the same thing as it does to us. So, define "fast"

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