10 Biggest Star Wars Retcons

This one may not be as noticeable as the other entries on our list, but it's still a fairly big retcon that confuses the history of the Old Republic.

In A New Hope, Alec Guinness' grizzled Ben Kenobi says that the Old Republic existed "for over a thousand generations", which was interpreted by various Expanded Universe sources as meaning 25,000 years.

However, skip ahead to the release of Attack of the Clones, and here, Palpatine mentions that the Republic has stood "for over a thousand years", which, as you can tell, is pretty far removed from the 25,000 years suggested by Kenobi's line.

With the Expanded Universe no longer being canon, the question of which version of events is true has been hotly debated by Star Wars fans. 2020's The Star Wars Book did clear the air somewhat by claiming that the Old Republic was founded over 25,000 years prior to A New Hope - but that only made Palpatine's Attack of the Clones retcon even more of a headscratcher.