The El-Aurian homeworld was a formerly inhabited planet located in the El-Aurian system.

In the mid-23rd century, the planet was destroyed by the Borg Collective, who killed millions of its inhabitants and dispersed numerous others from the planet as refugees, who would become scattered throughout the galaxy. (TNG: "Q Who", "The Best of Both Worlds")

Several hundred El-Aurian refugees fled to Federation space aboard the SS Robert Fox and SS Lakul. Both ships were ultimately destroyed by an encounter with the Nexus, but 47 survivors from the Lakul – including Guinan and Tolian Soran – were rescued by the USS Enterprise-B. (Star Trek Generations)

In 2365, Wesley Crusher recalled hearing rumors that Guinan was from Nova Kron. (TNG: "The Child")

In 2371, Captain Jean-Luc Picard tried to convince Soran that destroying the Veridian system would make him no different than the Borg who killed his wife and children. Soran, though briefly shaken, retorted that the loss of his family and homeworld had merely taught him that death was the only constant in the universe. (Star Trek Generations)

See also

This planet was only mentioned in dialogue.
In a line of dialogue from the fourth draft script of "I Borg", Guinan stated, "The Borg took our whole world... left it in ruins." That line was written out of the episode by the time the final draft of the script was submitted. Also, both script drafts referred to the occupants of the planet, at the time of its destruction, as having been Guinan's "ancestors". [1]
Community content is available under CC-BY-NC unless otherwise noted.