The size of our observable universe must have grown over time in the early universe. Conversely with the accelerated expansion, I have heard that eventually our observable universe will shrink down to our local group of gravitationally bound galaxies. So then the observable universe must go through a maximum at some point in time. When is that and what is that maximum size?
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I want to know what happens to the space a black hole crosses over as our galaxy travels through space.
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