In the summer of 1975, the NASA Ames Research Center teamed up with Stanford University on "Space settlements: A design study" to brainstorm what life in space would look like. Two painters from the Bay Area were recruited, Don Davis and Rick Guidice, to provide realistic, though futuristic, takes on human life inside a space colony. Torus Cutaway AC75-1086-1 5725, painted by Rick Guidice, depicts a toroidal colony design (in mathematics a toroid is a donut-shaped object). Up to 10,000...