/u/RunningLowOnFucks's posts in /r/askscience
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If I wanted to build a mirror that reflected light from any direction back to its original emitter in a static range (say 100m away) What shape should it have and why?
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How do unmanned spaceships like Progress work and why do we even need people on the ISS if robots can handle the trip up there?
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I know that because of a treaty we can't have nuclear-based spaceships. But why can't someone assemble one in space already and then use it?
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Between two equal spheres, is gravity exerted over all their volume, their surface, or a piece of either?
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