Comments by "Jeff Huffman" (@tejing2001) on "What Actually Expands In An Expanding Universe?" video.

  1. "but then this breaks the idea of relativity and light being the same speed no matter where you measure it." I'm not entirely certain what you mean by this, but if I'm understanding the intuitive problem you're having correctly, the issue is that you can't see how the speed of light can be the same for both the stationary observer and the moving observer, but have the moving observer see more "video frames" of the oncoming light in the same amount of time. If that's your issue, the answer is fairly simple: you're not taking account of length contraction. Distances in the direction of motion are contracted, so the oncoming "video frames" get closer together in space, and now the video plays faster despite the "frames" moving through space at the same speed.
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