Force nexus

"I trained in one such place. A nexus of Force energy on a small swamp world."

―Luke Skywalker, describing the Dark Side Cave on Dagobah^[src]

SWCL Jedi Temple — The Force nexus in the central mountain of the Jedi Temple.

Force nexus is a term used to refer to any location where the Force, or any particular aspect of the Force, was unusually strong.

Such nexuses could be caused by any number of different events. Korriban in general and the Valley of the Dark Lords specifically were nexuses of the dark side of the Force due to the long-term presence of the Sith Lords, Nam Chorios was a nexus of the Force due to the omnipresence of the Tsils, a form of life; Vjun was a nexus of the dark side due to the horrible events of its past, the Dark Side Cave on Dagobah and a spot in orbit over Endor were tainted by the death of dark side users, Byss was a nexus of the dark side of the Force because it housed Palpatine's clones and his various Sith alchemy experiments and the Force energies sucking the lives on the planet.

There may have been a nexus in Lumiya's habitat asteroid, where Alema Rar was able to draw energy from it to power her Force specters.

The natural mountain on which the foundation of the Jedi Temple on Coruscant rested was a nexus. This became tainted by the dark side with the defeat of Lord Nyax at the site of the ruined Temple during the Yuuzhan Vong War.^[1] The most powerful nexus was the Valley of the Jedi, where the spirits of several thousand Jedi, both light and dark, were trapped after the Seventh Battle of Ruusan, a perhaps limitless source of Force energy even after the spirits were freed.

Objects left in the presence of a Force nexus for extended amounts of time eventually became saturated with the Force, which imbued the object with special abilities, like an edge that will never dull, the ability to absorb some Force powers like Force lightning and electric judgment, or even the ability to enhance the wielder's perception of time, allowing him to think and react faster than otherwise possible. This effect allowed even a being who wasn't Force-sensitive to use the weapon to a great degree. Further, objects imbued with a particular aspect of the Force - be it light or dark - could actually become so saturated as to make their very presence intolerable to those of opposite alignment.

In 14 ABY, the Disciples of Ragnos drained several Force Nexuses of their Force Energy with the Scepter of Ragnos.

Behind the scenes

The first Force nexus to appear in Star Wars continuity was the cave on Dagobah, seen during Star Wars: Episode V The Empire Strikes Back. The concept of a location imbued with Force energy was then expanded on in the 1997 video-game Star Wars: Jedi Knight: Dark Forces II.

In the 2001 video game Star Wars: Obi-Wan, a Force nexus is a power-up which grants the user unlimited Force powers for a limited time.