They say the universe is expanding. They also say it all came from a single place/state. So if everything is expanding in all different directions, wouldn’t we observe some galaxies actually moving towards us as well? It just seems like if everything is expanding away from us (nothing coming towards us), then that is assuming that Earth is the center of the universe (which is wrong obviously).
In: Physics
The analogy usually used is if you put a little air in a balloon and then draw some dots all over it, and then blow it up, all the dots move away from each other. No matter which dot you pick all the others are moving away from it as you blow up the balloon and it expands. Our galaxy is like one of those dots.
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