humanoidhistory: June 5, 1966 – Gemini 9 astronaut Gene Cernan goes becomes the third human to walk in space. (NASA)

humanoidhistory: June 5, 1966 – Gemini 9 astronaut Gene Cernan goes becomes the third human to walk in space. (NASA)

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from: https://stemss.tumblr.com/post/161782333751