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Space Colony Concepts: NASA's 1970s Vision for Giant Space Stations (Gallery) | Space.com

from io9

The Space City That Could Have Been, If Not For Wernher Von Braun

from io9

New Elysium concept art shows off Matt Damon's perfect space station

from GeekTyrant

1970s Space Station Concept Art that Inspired ELYSIUM

from TheMetaPicture.com

International Space Station silhouetted against the moon

International Space Station silhouetted against the moon ~ You Can Do It 2. http://www.zazzle.com/posters?rf=238594074174686702