If the speed of light is 299 792 458 m / s and the source stopped projecting. There would be light for 299 792 458 m / s coming from a source that no longer exists.
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From @danielownsall
If the speed of light is 299 792 458 m / s and the source stopped projecting. There would be light for 299 792 458 m / s coming from a source that no longer exists.