Scientifically is it possible we may discover something faster than light any time in future?
In: Planetary Science
Speed of light is the guardian of causality in our universe. That means that if one event influences another, anyone anywhere will see them in the correct order.
Some things can ***technically*** be faster than light, but those things will not transmit information, participate in causality.
Examples of of such phenomena include:
The movement of shadows, since they’re an absence of light, they can “travel” at any speed.
“Phase speed”, i.e. the speed at which wave crests travel. You can add two waves of light in such a ways that their crests move at any speed you want. But that’s not the same as the photons moving, so it doesn’t break anything.
Quantum entanglement. For reasons I’m not qualified to explain, “spooky action at a distance” is faster than light, but isn’t capable of transmitting information, and therefore it doesn’t break anything.
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