Thanks to the WGA script that was released to writers for awards nominations and the junior novelization of Star Wars: The Force Awakens, we now have confirmation of major plot points involving Luke Skywalker, namely what planet Rey found him on at the climax of the movie.
As we know, the film ends with Rey seeking out Luke’s help after R2-D2 revealed the final piece of the puzzle that ended the galactic-wide search for the wayfaring Jedi. Rey encounters a hooded Luke on a mysterious planet, which has now been named as Ach-To.
The novelization also confirms that the planet is indeed where the famous First Jedi Temple was located, as mentioned by Maz Kanata to Rey. Luke found it, but still leaves the question as to why he remained there for years…
We’ll have to wait until Episode VIII is released in eighteen months time before we get any official development on this, but it is very interesting indeed.
Official Star Wars Wikipedia entry on the planet: “Ahch-To was an aquatic planet which served, three decades after the Galactic Civil War, as the home to Jedi Master Luke Skywalker, who went into exile seeking the first Jedi Temple after his new generation of Jedi were killed by the Knights of Ren. Ahch-To had numerous islands, which Skywalker sought out during his exile. After the Resistance pieced together two map fragments to reveal Skywalker’s location, Rey traveled to Ahch-To in the Millennium Falcon accompanied by R2-D2 and Chewbacca, in search of him.”