space-colony-2000As we close the book on the final U.S. space shuttle mission ever, it’s heartbreaking to watch NASA videos from the groovy 1970s, a time of incredible optimism regarding the final frontier in the aftermath of humankind’s first walk on the moon. Preliminary plans and concepts were being outlined for self-sustaining space colonies where people could live and work. A space station called Taurus would be home to 10,000 people, with dairy farms, manufacturing, vegetation, solar power stations… and then somewhere along the way we became sidetracked.