/u/I_make_things's posts in /r/askscience
What is the scale of the largest structures that are expected to hold together despite the metric expansion of space?
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If you can add spin to a black hole by slinging matter into it, doesn't that violate the viewpoint of an external observer never seeing the matter pass through the event horizon?
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What differentiates the "start" end of a DNA strand from the "end"? Is information ever encoded in both directions on a strand of DNA?
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Will the metric expansion of the universe ever remove the cosmic microwave background radiation from view?
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