March 18, 1965 was the day when the first human being walked in space.
https://www.newscientist.com/definition/first-space-walk/
Soviet cosmonaut Alexei Leonov was followed by NASA’s Edward White on June 3 of that same year.
https://www.nasa.gov/multimedia/imagegallery/image_feature_1098.html
The Misty Miss Christy 
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