Babylon 5 was the fifth and final space station in the Babylon Project of the Alliance of Nations, located in neutral space in orbit of Epsilon III near Epsilon Eridani. Babylon 5 was divided into six color-coded sectors: Blue, Red, Green, Brown, Grey and Yellow. Each sector was subdivided into 36 regions divided along 10-degree lines respective to the station core. Directions within the station were noted as spinward, retrograde, forward (toward the command sphere), and aft (toward the power plant).

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