this was the name given to the Imperial source of information about the activities of the New Republic, some five years after the Battle of Endor. It was one of many espionage systems left behind by the Empire when Coruscant was retaken by the Republic. Delta Source, however, wasn't a being. It was a fairly simple combination of technology and nature. One of the vast number of maintenance droids that worked in the natural areas surrounding the Imperial Palace made regular stops to prune and maintain the ch'hala trees grown nearby. These ch'hala trees, which reacted to all manner of vibration, served as a form of organic microphone. Deep inside one of these trees, attached to its taproot, was a communications tube that had fiber sensors implanted to the tree and a comm link. The maintenance droid would download information that had been recorded by the ch'hala tree, then transmit it on top of other maintenance information. Because of the effects of Delta Source, the early leaders of the New Republic considered moving their base of operations off Coruscant. Before they knew the true nature of Delta Source, it was believed that Delta Source was a technology-based system that was built into the Imperial Palace.