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
There are galaxies moving towards us, because the Universe isn’t completely uniformly filled with galaxies.
However, if the Universe were uniformly distributed with galaxies, which is mostly true, they would all be moving away from each other. The space itself is expanding, which makes the space between any two galaxies increasing. For a distant galaxy A, we are moving away quickly, and galaxy B near us is also moving away from that distant galaxy as well. But if galaxy B is is nearer to A that we are, then it’s moving away from A more slowly so that the distance to us and A is both increasing, from B’s perspective.
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