Manned Orbiting Laboratory (MOL) (1966) illustrated by U.S. Air Force. Original public domain image from Wikimedia Commons.… https://www.rawpixel.com/image/10202306/image-space-sky-airplaneFree Image from public domain licenseManned Orbiting Laboratory (MOL) (1966) illustrated by U.S. Air Force. Original public domain image from Wikimedia Commons.… https://www.rawpixel.com/image/10184785/image-space-sky-airplaneFree Image from public domain licenseArtist concept illustrating the relative sizes of the one-man Mercury spacecraft, the two-man Gemini spacecraft, and the… https://www.rawpixel.com/image/441705/free-photo-image-space-illustration-astronomy-spaceshipFree Image from public domain license