That's just a bizarre definition of light. By that definition the center of a star is dark because the photons keep getting reabsorbed immediately. Which is alw

That's just a bizarre definition of light. By that definition the center of a star is dark because the photons keep getting reabsorbed immediately. Which is always true from a photons point of view anyway, so what's the difference? In fact you might as well say that the universe was dark until the first eye evolved.