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This set of three Gemini Orbit Charts, designated GOC-4 and encompassing sheets 1 through 3 (of 3, i.e., complete) for orbits 1-66, is a technical representation from the Gemini IV mission in May 1965, produced by the USAF Aeronautical Chart and Information Center. At a scale of 1:60,000,000 at the equator, these charts provide detailed trajectories, tracking sites, and designated mission points, including primary and secondary landing zones, indicative of the navigational and operational approaches of the program.

During the 1960s, NASA's Gemini program was integral to advancing the United States' manned space efforts, leading to the Apollo moon missions. The Gemini IV mission is particularly notable for conducting the first American spacewalk. These charts reflect the practical aspects of space navigation and mission planning, capturing the essence of the era's technological ambitions.

The collaboration between military and aeronautical organizations highlights the period's intensive focus on space as a new frontier. The charts, with their notes on the preliminary positions of various tracking points, illustrate the iterative nature of space mission planning, subject to continuous refinement and adjustment.

The Gemini IV Mission

The Gemini IV mission, conducted by NASA from June 3 to June 7, 1965, marked a series of firsts and notable achievements in the early American space program. As the second crewed spaceflight in NASA's Gemini series, it featured astronauts James McDivitt and Edward H. White II. Most famously, Gemini IV included the first American spacewalk (EVA) performed by White, making him the first U.S. astronaut to float freely in space, a momentous occasion that lasted 21 minutes and showcased the potential for human mobility outside a spacecraft. The mission extended over four days, orbiting the Earth 66 times and providing valuable data on the effects of prolonged spaceflight on the human body, as well as testing various spacecraft systems and maneuvers, significantly contributing to the United States' capabilities and knowledge in human space exploration.

Condition Description
3 of 3 sheets.