Tags : Nick Nielsen Starship Congress 2017 Lunar settlement lunar development Mars LEAG meetings Dennis Wingo Space Show from 10-16-17 generational starships small starships human interstellar flight SpaceX Mars mission Space infrastructure structure of civilization Comsats human spaceflight shipping industry analog historical analogs Earth as exo-civilization mining the Moon large central projects Egyptian civilization frontier development model idea diffusion space funerals computer technology advancement space development costs technological competitiveness reasons for space settlement Greek Dark Age space visionary models societal collapse Risk Opportunity lunar civilization interstellar development Dr. Robert Zubrin Guest Nick Nielsen Tagline The Role Of Lunar Civilization in Interstellar Buildout View the discussion thread.