The reactor stalk first appeared unnamed in the second Star Wars film, Star Wars: Episode V The Empire Strikes Back, released in 1980. The device was first identified as the reactor stalk in the Legends reference book Inside the Worlds of Star Wars Trilogy, released in 2004, with the name being made canon in the 2016 reference book Star Wars: Complete Locations, the re-issue of 2005's Star Wars: Complete Locations.
The reactor stalk first appeared unnamed in the second Star Wars film, Star Wars: Episode V The Empire Strikes Back, released in 1980. The device was first identified as the reactor stalk in the Legends reference book Inside the Worlds of Star Wars Trilogy, released in 2004, with the name being made canon in the 2016 reference book Star Wars: Complete Locations, the re-issue of 2005's Star Wars: Complete Locations.