Known Space is the term for the areas of the universe known to the civilizations of the Local Group.

The Known Worlds is a term used to describe all of the discovered planets, inhabited or uninhabited, in the 3 galaxies, Milky Way Galaxy, Triangulum Galaxy, and Andromeda Galaxy, as well as other discovered planets in satellite galaxies such as those in the Magellanic Cloud Galaxy.





  • In storytelling terms, this somewhat reflects the Greek idea (though not unique to them) of the "known world" hedged around with wild and untameable lands and creatures, the "Hic sunt dracones" of late Mediaeval mythology.
  • Larry Niven is famous for his Known Space universe.

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