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NASAJune 12, 2026PURSUE Release 03 (June 2026)
NASA-UAP-D018, Gemini 4 Experiment Debriefing, 1967
Summary
Gemini IV was the second crewed mission of the Gemini series. Astronauts James McDivitt and Edward White successfully completed the four-day flight between June 3 and June 7, 1965.
Key highlights
The GT-4 mission aims to demonstrate manned space flight for four days.p.11
“This GT-4 mission is intended to further demonstrate manned space flight for a period of four days.”
Three additional flight activities include extravehicular activities and rendezvous demonstrations.p.3
“Demonstration of extravehicular activities (EVA) using a 25 foot umbilical.”
The G4C spacesuit features a triple visor and improved thermal protection.p.4
“The G4C suit has the following new features: a triple overvisor.”
The mission will utilize a new zero-g Integral Propulsion Unit for maneuvering.p.7
“The extravehicular maneuvering will be accomplished using a zero g Integral Propulsion (ZIP) Unit.”
The spacecraft will reenter and land approximately 400 miles southwest of Bermuda.p.8
“the spacecraft will reenter and touchdown approximately 400 miles southwest of Bermuda.”
Source
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