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Speed of Light
Inventor's IQ Points for this activity: 100
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Because light travels at a large but finite speed, it takes time for light to cover large distances. Thus, when we see the light of very distant objects in the universe, we are actually seeing light emitted from them a long time ago: we see them literally as they were in the distant past.
Fill in the blank: The speed of light is a measure of how fast light travels in one _________.
