How fast does the speed of light travel?
Light travels at a constant, finite speed of 186,000 mi/sec. Thanks for using ChaCha!
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by Stephanie B.
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Older Answers
The speed of light travels at exactly 299,792,458 metres per second (approximately 186,282.4 miles per second). Keep on ChaCha'ing
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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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