/u/argonia's posts in /r/askscience
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If two people were placed in a complete vacuum with no stars or other objects to base their motion, and person2 start to move toward person1, would person1 be able to tell whether person2 is moving toward him or he himself is moving toward person2?
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How much more weight could a person lift without permanently damaging his arms if the brain did not limit our maximum muscle usage?
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Do the galaxies themselves orbit a central area like us to our son, or do they just freely move about? Also,w hat would happen if 2 galaxies were to collide?
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