Do We Expand With The Universe

The video explains that while the universe isn't expanding, space itself is. This expansion affects the distance between objects, but forces like gravity and electromagnetism keep atoms and solar systems intact. An analogy of a cat on a leash illustrates how these forces work. Over vast distances, gravity's pull weakens, allowing galaxies to drift apart, evidenced by redshifted light.

What new insight or understanding did you gain from this video?