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The anti-fog solution used on helmet visors is just ordinary dishwashing soap, which is what got stuck in the astronaut's eye. | NASA
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'Tears in Space Don't Run Down Your Face'

'Tears in space don't run down your face.' Understand why tears don't run down your face in space and find out how NASA determined that to be true.

May 25, 2011
3:00 AM EDT

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