Keywords: space colony spacecolony art ames space colonization spacecolonization nasa space colony spacecolony space colony illustration spacecolonyillustration illustration space art spaceart public domain publicdomain Exterior view of a double cylinder colony. Art work: Rick Guidice. Credit: NASA Ames Research Center NASA ID AC75-1085 Exterior view of a double cylinder colony. Art work: Rick Guidice. Credit: NASA Ames Research Center NASA ID AC75-1085 License: Public Domain Source: NASA Ames Research Center Learn more about Space Colonization on Wikipedia. License: Public Domain Source: NASA Ames Research Center Learn more about Space Colonization on Wikipedia. |