Cosmonaut Aleksei Leonov became Famous after Performing the World’s First Walk in Space

On March 18, 1965, Cosmonaut Aleksei Leonov became famous after performing the world’s first walk in space. “Outside the Spacecraft: 50 Years of Extra-vehicular Activity” is on view at the Museum in Washington, DC January 8 through June 8, 2015. See the exhibition online at

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