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Real-time speed of light from Earth to Mars

Hurry up, light. We’re gonna be late: By James O’Donoghue, the animation shows the speed of light in real-time. The distance between Earth, the moon, and Mars is to scale, but the locations are scaled up so that you can see them. See also the animations for Earth to the moon and of light orbiting Earth. Tags: light, NASA, scale, speed

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