Though John Glenn, like all astronauts, found the experience of looking back at Earth from space profoundly moving, the sight of the blue planet was trumped in his eyes by something else more beautiful still: The golden glitter of the billions of frozen crystals produced whenever urine was expelled into space.
[Ancient Roman, Chinese and German societies often used urine as mouthwash.]
Sources
L. Davidson, Wit`s Thesaurus
