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The speed of light travelling in a vacuum is said to be exactly 299,792,458 meters per second. Remember this is in a vacuum, for if the light were to pass through some transparent material, such as glass or water it would marginally slow down.

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12y ago
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6mo ago

The speed of light in a vacuum is approximately 186,282 miles per second (299,792 kilometers per second). This speed is considered to be the fastest possible speed in the universe according to Einstein's theory of relativity.

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13y ago

186,282.397 miles per second or 299,792,458 meters per second

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15y ago

it goes 186,000 miles per second

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11y ago

now where

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Q: How fast dose the speed of light travel?
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