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The speed of light
The speed of light is the greatest speed in the world. The speed of light is 300 kilometers per second. If you move at this speed, you can go around the Earth 1 times in 7,5 second.
The speed of light
The speed of light is the greatest speed in the world. The speed of light is 300 kilometers per second. If you move at this speed, you can go around the Earth 1 times in 7,5 second.