The Rangers are mainly made up of Minbari and Humans, though some of the people from the League of Non Aligned Worlds have also joined up. They are archeologists resarching ancient relics hoping to gain new technology, though they are also a front some unknown people working on secret projects Edgar Industries Edgar Industries is one of Earth's mega-corporations and is extremely powerful. The fifth Babylon station built by the Earth Alliance for the purpose of making peace. The sister ship of the Excalibur Jump Gates Jump gates are huge constructions which are built in important places to enable ships to enter 'hyperspace'. Journeying though hyperspace takes a lot less time as the physical space is smaller.
Large ships can create their own 'jump points' to enter and exit hyperspace.