The Blue Moon doesn't look any different than the other full moon this month and ... in fact, it isn't any different at all, but some weird things we do with calendars make it "rare" and ... because of that we import some special significance to it ... and why not?
"Leap Day" isn't real, but that doesn't mean I don't feel special on February 29th.
So go look at the moon. Feel special. It's a good thing.