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  • Mona Evans

    Canadian astronaut Chris Hadfield holds up two objects that look like grenades as part of an April Fools' Day prank. (Credit: Canadian Space Agency/Chris Hadfield ) April 1, 2013. ( They're actual air sampling devices.) Mona Evans, "Astronomy April Fools" http://www.bellaonline.com/articles/art183019.asp

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