Gemini 5 mission set a record for the duration of a crewed flight
On August 29, 1965, NASA astronauts Gordon Cooper and Pete Conrad returned to Earth after eight days in low Earth orbit as part of the Gemini 5 mission. The flight set a new world record for the duration of a crewed spaceflight and became the first such record for the United States, Space.com reports.
Eight-day flight
Gemini 5 launched on August 21, 1965, atop a Titan II rocket from the U.S. Air Force station at Cape Canaveral, Florida. It is now called Cape Canaveral Space Force Station. Cooper was the mission commander, while Conrad was the pilot. Cooper designed the mission patch featuring a covered wagon and the inscription “8 Days Or Bust.”
The flight was intended to test the crew’s endurance ahead of future lunar missions under the Apollo program. At the time, NASA’s longest mission had lasted four days, while flights to the Moon and back required missions at least twice as long. Conrad later described the cramped conditions inside the Gemini spacecraft with the phrase “eight days in a garbage can.”
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Cancelled rendezvous and technical difficulties
The astronauts were to test rendezvous and maneuvering with a target that was planned to be deployed from the spacecraft. Due to an oxygen pressure issue in a fuel cell tank, Mission Control cancelled the demonstration, although the target was deployed as planned and tracked by radar. Several scientific experiments also had to be abandoned.
To conserve energy, the crew switched off secondary systems. On the fifth day, attitude control thrusters malfunctioned, but the astronauts used a drift-and-correction method and continued the mission. They also conducted Earth observations and medical experiments.
New record
After splashing down in the Atlantic Ocean, Gemini 5 surpassed the previous record set in 1963 by Vostok 5 cosmonaut Valery Bykovsky, who had spent nearly five days in space. NASA noted that Cooper and Conrad lost weight after the flight but were in good physical condition. The Gemini 5 capsule is now displayed at Space Center Houston near the Johnson Space Center in Houston.
