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The 'human problem' with travelling to another star - Opinion - Al Jazeera English
The myth of the starship - Charlie's Diary
[http://www.antipope.org/charlie/blog-static/2009/11/the-myth-of-the-starship.html] - - public:time
The reality of deep space travel
Celestia: Home
[http://www.shatters.net/celestia/] - - public:ghiberti
Celestia, a real-time 3D space simulation featuring a database of over 100,000 stars, nearly a hundred solar system, objects, and a complete catalog of extrasolar planets.