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==External links==
*[http://lifeboat.com/ex/space.habitats Lifeboat Foundation Space Habitats], a space habitat advocacy group.
*Paul Lucas (2005), [http://www.strangehorizons.com/2005/20050221/homesteading-a.shtml Homesteading the High Frontier: The Shape of Space Stations to Come], ''Strange Horizons''
*[http://www.npr.org/blogs/13.7/2011/05/01/135895195/visions-of-the-high-frontier-space-colonies-of-1970 NPR visualization of a large-colony space habitat], May 2011.
*[https://www.youtube.com/watch?v=EgrdAUFFMrA NASA video about space habitats and space settlements construction as seen around 1970"s (5 min)]
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