I only recently learned of the Gemini XI mission and their use of the Agena Target Vehicle, I was previously unaware that experimentation with creating artificial gravity in space had taken place all the way back in 1966.
This shot captures the crew of Apollo 15 before their mission to the Moon, in the foreground you can see the General Motors powered Moon Buggy they used for testing and pre-mission practice.
This beautiful, historical infographic-of-sorts was designed by NASA in 1967 to give the general public a better idea of what the Apollo 11 mission was actually going to do, from lift off to lunar landing to splash down in the Pacific.