In the 1970s the Princeton physicist Gerard O’Neill, with the help of NASA Ames Research Center and Stanford University, held a series of space colony summer studies which explored the possibilities of humans living in giant orbiting spaceships. Colonies housing about 10,000 people were designed and a number of artistic renderings of the concepts were made. For more information see The Public Domain Review at https://publicdomainreview.org/collection/space-colony-art-from-the-1970s
