Nope, rotation is not relative because it's an acceleration. There is no "space itself" because then you're assuming it is relative, like the speed of light. B

Nope, rotation is not relative because it's an acceleration. There is no "space itself" because then you're assuming it is relative, like the speed of light. Basically you're trying to rediscover the aether. That was the question: light moves at speed C, but relative to what?