The latest issue of Marvel's new Darth Vader comic may offer an explanation as to why Luke Skywalker (Mark Hamill) went into exile, as seen in Star Wars: The Force Awakens. Warning: Darth Vader #2 and potential The Last Jedi spoilers follow. As reported by ComicBook.com, Star Wars: Darth Vader #2 (read IGN's review) includes a panel where Vader explains why the Jedi who survived the Great Jedi Purge didn't come to the aid of those in trouble, saying it was because of the Barash Vow. Continue reading…