This is Gemini 6-A, on display at the Oklahoma State History Museum in Oklahoma City, Oklahoma. This spacecraft was on display at the St. Louis Science Center for many years. When the Science Center did a major remodel, Gemini 6-A was sent to the Kansas State Cosmosphere to be refurbished. The Science Center received Gemini 3-A, a test article, in return. The restored Gemini 6-A then went on display in Oklahoma City in the new state history museum building.

Gemini 6 was scheduled to be launched prior to Gemini 7. However, the target rocket that Gemini 6 was to dock with exploded shortly after launch. As a result, Gemini 6 was postponed, and Gemini 7 was flown. A new mission profile was worked out where Gemini 6 would fly in formation with Gemini 7. The new mission was named 6-A, and it was carried out flawlessly.