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 evidence do we have that supports the idea of galaxies moving farther apart over time?

Discuss the implications of space expanding faster than gravity's attraction.