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Continue to ChatSome astronauts describe the routine flushing of urine into space, where the freezing temperatures turn the droplets into a cloud of bright, drifting crystals, as being among the most amazing sights they saw on an entire voyage. - Gene Cernan from https://whatsmyquote.com/quote/some-astronauts-describe-the-routine-flushing-of-urine-into-space-where-the-freezing-temperatures-turn-the