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
Say you have a piece of paper. This is the universe 10 billion years ago. You put 2 dots, roughly a centimeter from each other. These are 2 galaxies.
Now imagine someone takes that same paper, our universe, and makes it 10x the size it was. This is to simulate how the universe has grown 10x in size in 10 billion years. Now if you find those 2 dots, the distance between them now should be about 10cm.
This simulates the large distance that has grown between the 2 galaxies in the span of 10 billion years as the universe itself grows.
Hope that made sense
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