The universe has a speed limit, and it's the speed of light. Nothing can travel faster than light — not even our best spacecraft — according to the laws of physics. So, what is the speed of light?

Scientists broadly deem faster-than-light transmission of mass or information impossible, as it would violate the laws of general relativity and causality, essentially meaning that such signals would ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...