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Gemini 4

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description Gemini 4 Overview

Gemini 4 was a 1965 crewed spaceflight conducted by NASA as part of the Gemini program. Commanded by James McDivitt with pilot Ed White, the mission successfully executed the first American spacewalk. During the four-day Earth-orbit mission, White spent approximately twenty minutes outside the spacecraft. The flight also marked the first time a NASA mission was controlled from the Manned Spacecraft Center in Houston rather than Florida, advancing crucial spaceflight techniques.

help Gemini 4 FAQ

What made Ed White's Gemini 4 spacewalk historic?

On Gemini 4, Ed White became the first American to walk in space. His extravehicular activity lasted roughly 20 minutes and followed Soviet cosmonaut Alexei Leonov's first-ever spacewalk earlier in 1965.

Who flew aboard Gemini 4?

NASA astronauts James McDivitt and Ed White crewed the mission. McDivitt remained in the spacecraft while White performed the spacewalk.

How long did Gemini 4 remain in orbit?

The mission lasted about four days and completed 66 Earth orbits. This was a major increase over the short Mercury flights and helped NASA study whether people could function during longer missions.

Did Gemini 4 successfully rendezvous with its rocket stage?

No, an attempted rendezvous with the spent Titan II upper stage was unsuccessful. The effort taught NASA that simply pointing at and chasing an object in orbit does not produce a rendezvous, because orbital speed and altitude must be managed together.

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