How fast is light speed in mph?
The speed of light is 299,792,458 meters per second or 670,616,629 miles per hour! That's really fast! ChaCha again soon!
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by Jennifer T.
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Top Questions Asked on ChaCha.com for Light Speed
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What is the speed of light in a vacuum?
The speed of light in a vacuum is 299,792,458 m per second/18...
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How fast is the speed of light in mph's?
The speed of light is 670,616,629 mph! Pretty fast, right? Ch...
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What is the exact light of speed?
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How fast is the speed of light?
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About Light Speed
The speed of light in a vacuum is a scientific constant usually noted as 'C.' Its speed is 299,792,458 meters per second or approximately 186,282 miles per second. According to Einstein, E=MC^2, and nothing can travel faster than the speed of light.
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