6 Answers
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186,000 mps close to 1 billion kmh
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Light Speed Mps
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The speed of light in a vacuum is 299,792,458 metres per second.
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In a vacuum the speed of light is exactly 299,792,458 meters per second by definition. If you meant miles per second it is 186,282.397 miles / second.
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6.706e+8
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299,792,458 meters per second
