Sept. 14, 1966 – Gemini XI Artificial Gravity Experiment

On Sept. 14, 1966, Gemini XI is tethered to an Agena target vehicle. Command pilot Charles "Pete" Conrad and pilot Dick Gordon are maneuvering their craft to keep the tether taut. By firing their side thrusters to slowly rotate the combined spacecraft, they were able to use centrifugal force to generate about 0.00015 g of artificial gravity.

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