SMRTR Science & EngineeringMar 18, 2026Nautilus

The Comedy of Errors That Was the First-Ever Space Walk

SMRTR summary

Sixty-one years ago, Soviet cosmonaut Alexei Leonov became the first human to walk in space, but his historic 10-minute spacewalk quickly turned into a life-threatening crisis. His spacesuit ballooned from pressure differences, forcing him to dangerously depressurize it to squeeze back through the airlock. The spacecraft's automatic re-entry system later failed, requiring manual firing of retro rockets. Leonov and his commander crash-landed in the Siberian wilderness and spent a freezing night before being rescued.

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