Spacetime Sunday: Twinkle, Twinkle, Little Star
Have you ever been swimming, gone to the bottom of the pool and looked up through the water, seen the lights dance?
Even though you know the light is staying still, to you it appears to occupy much more space than it actually does, blurring its true position.
That’s similar to what is happening. But instead of water and the refraction that is occurring, it is a fluid of another kind; our…