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On one hand, the speed of light is just a number: 299,792,458 meters per second. And on the other, it’s one of the most important constants that appears in nature and defines the relationship of ...

Why can't we travel faster than the speed of light? Find out what complications arise as physicists explore light speed. Einstein’s special theory of relativity governs our understanding of both the ...

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 ...