Star Wars just proved that Alderaan was always Palpatine's greatest mistake. Relatively few Star Wars stories have been set on the Core World of Alderaan, the homeworld of Princess Leia Organa. For all that's the case, though, it is a world with a profound legacy — a planet that proved a thorn in the Emperor's side and was ultimately targeted for destruction by the first Star Wars Death Star.
As told in Alexander Freed's novel Victory's Price, Palpatine established a system that invited every being to become party to the Empire's own corruption, and so strengthened the dominance of the dark side. The Emperor observed everything the citizens of his galaxy did, looking for evidence of their corruption, and he grew dissatisfied with Alderaan; that was why Tarkin didn't even need permission to destroy the planet, because he knew it was at the top of the target list. Ironically, it would prove to be a mistake, because Alderaan's destruction became a perfect recruitment tool for the Rebel Alliance after they managed to blow up the Death Star.
Related: Star Wars: One Palpatine Quote Perfectly Explains The Fall Of The Jedi
It seems Palpatine had always underestimated Alderaan — and its senator, Bail Organa. According to E.K. Johnston's new Star Wars novel Queen's Hope, he foolishly overlooked the influence of the Clone Wars upon the peaceful planet. Alderaan had always been close to the Jedi, and there is a strange sense in which Bail Organa led his world to better embody their beliefs better than the Jedi did themselves; the Alderaanians reached out to the galaxy in need, offering not only wealth but doctors, teachers, and architects to help with the rebuilding. Meanwhile, the Alderaanians also welcomed countless refugees. But
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