The conversation between human and AI assistant.
How do we know for sure that nothing is faster than light?
Can anything even come close to the speed of light?
Yes. Cosmic rays can travel up to 99.9% the speed of light, but no object or information can surpass the speed of light. This is due to the fact that as an object approaches the speed of light, time slows down for that object. At the speed of light, time would stop completely, making it impossible to surpass that speed.