In the 45 years since Star Wars first entered the pop culture landscape, there have been a dozen feature films released, with plenty more on the way. There have also been millions, if not billions, of words written about the films, from reviews to fan theories and beyond. In honor of yesterday’s Star Wars Day on May 4, Mental Floss would like to add one more story into the mix. Here are some fascinating facts about the Star Wars universe, any one of which makes a perfect response the next time someone says “May the 4th be with you.”