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The "voting system" is no panacea. Close voting is not just an expression of an opinion like a comment is. It takes only five (or less) users to shut down a question and prevent anyone from posting an answer. It then takes days to reopen with five more votes, slowing down and discouraging prospective answerers from putting in the time and effort to ...


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There are many fields of science and engineering that overlap space exploration. Certainly chemistry is one, as is physics, biology, geology, etc. Chemistry is important to space exploration in more ways than just combustion chamber relations - there are the reactions that take place in fuel cells, in the shocks of reentry vehicles, in life support equipment,...


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