Speed of Light

ELI5 - Why can't anything move faster than the speed of light?

The speed of light is really about causality—cause and effect must happen in a logical order. Because space and time are linked together (spacetime), there's a natural limit to how quickly information or influence can travel from one place to another. If anything traveled faster than the speed of light, it would break this cause-effect relationship, making it possible for effects to happen before their causes, which violates basic logic. That’s why the speed of light acts as the universe’s fundamental speed limit.

By Alex 22 days ago