Gemini-Centaur Gemini Docked to Centaur for Circumlunar Flight Credit: © Mark Wade. 2,766 bytes. 567 x 143 pixels.

In the first Gemini project plans, it was planned that after a series of test dockings between Gemini and Agena rocket stages, Geminis would dock with Centaur stages for circumlunar flights. This was a threat to Project Apollo and was suppressed.

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Gemini-Centaur-LM - Gemini-Centaur-LM 640 pixel Credit: © Mark Wade. 9,925 bytes. 621 x 415 pixels.

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Craft.Crew Size: 2. Maximum Diameter: 3.0 m. Total Habitable Volume: 2.55 m3.

• 26 - Baker, David, The History of Manned Spaceflight, Crown, New York, 1981.
• 40 - Hacker, Barton C and Crimwood, James,, On the Shoulders of Titans, Government Printing Office, 1977. HTML when accessed: http://www.hq.nasa.gov/office/pao/History/SP-4203/cover.htm
• 205 - Hall, Edwin H, "Memorandum to Deputy Director, Gemini Program, "Circumlunar Missions"", June 29, 1965.
• 207 - Big G, Briefing, McDonnell Douglas, 20 December 1967.
• 208 - Advanced Gemini Spacecraft, Briefing, McDonnell Douglas, ca. 1967.
• 210 - Marks, C D and Quest, R G, AAS Science and Technology Series, Vol. 21, "Low Cost Orbital Transportation: How Big A Step!", 1969.

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Gemini lunar - Gemini-Centaur docked configuration. Launched seperately, the Gemini would have docked with the Centaur stage in low earth orbit. The Centaur would then fire, placing the Gemini on a circumlunar trajectory. Credit: © Mark Wade. 13,775 bytes. 774 x 517 pixels.

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