/u/nwo97's posts in /r/askscience
Do galaxies form around supermassive black holes, or do supermassive black holes form in the center of galaxies?
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When galaxies collide, does empty space of dark matter and everything inside that galaxy move with it?
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Our universe is expanding, is it gaining in mass or is that staying constant since the birth of our universe?
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Is dark matter just the gravity we feel on our universe from adjacent universes or multi verses that are far bigger than ours?
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