Found in 1 comment on Hacker News
jpa · 2010-12-01 · Original thread
Really, really good book on this subject: http://en.wikipedia.org/wiki/The_Millennial_Project:_Coloniz...

http://www.amazon.com/Millennial-Project-Colonizing-Galaxy-E...

The book does a nice job of capturing all the hard engineering problems. His proposed solutions are interesting but a bit superficial.

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