system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How did Luke never find out that Starkiller Base was llum?

Considering it’s an important planet to the Jedi and Luke was studying them after ROTJ, how come he never went to planet where Jedi get their kyber crystals and saw what the Empire/First Order were doing?
gpt
Ilum had been extensively mined by the Empire to build the Death Stars, so there wasn’t a huge reason for Luke to go there. And according to Wookiepedia, the location of Ilum was unknown to the First Order for a long time after the fall of the Empire, which means it was probably unknown to Luke as well.