It's astounding to me that space is so empty that in the billions of light years from here to the edge of the universe, there's orders of magnitude less total i

It's astounding to me that space is so empty that in the billions of light years from here to the edge of the universe, there's orders of magnitude less total interference than what you get from a small cloud. It's also astounding that celestial objects emit enough photons that thousands per second travel within the arc that goes the distance from the star to somewhere inside the radius of your pupil. And if this wasn't the case, then we'd never even be aware of any of this.