Can shadows travel faster than light?

Let me just add an interesting trivia to the other answers: you can have a shadow travel at any speed you like. The shadow isn't a material object. It is a region, often measured on a surface, that is obscured from a light source. read more

Yes, a shadow can travel faster than light. A shadow is not a material object - it has no mass. Our minds analyse as if it were a thing, because that is the way we are used to analysing the world. But it is only actually a logical construct, the area over which a n object obscures a light source. read more

A phenomenon can move faster than light if there is no way to use that motion to send a message. Suppose you are standing at the edge of a shadow cast by a moving object very far away. You can observe the shadow move, and its edge may indeed move faster than the speed of light. read more

But it's really important to remember that this isn't defying the law that nothing can go faster than light. Again, there is no thing that's moving any faster than light. The shadow in this second sense is just a pattern that you define, and it was created by actual particles that moved at the speed of light. read more