/u/superhelical's posts in /r/askscience
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Can a moon have a moon? What limits the "levels" of satellite that can exist in a stable solar system?
433 upvotes
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364 upvotes
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323 upvotes
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279 upvotes
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Roast beef turns grey-brown when fully cooked, but smoked meat becomes red, instead. How does smoke change how the meat cooks? What's the chemistry of this reaction?
55 upvotes
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