Yes, I know it's a comic book. Yes, I know there are at least nine other impossible things that the Blue Boy Scout can do. Yes, I know it's a silly question, but isn't that what forums are for?
I'm just curious if there has ever been an in-universe explanation for how Supes can propel himself up in the sky. Does he emit some kind of propulsion? Is he capable of moving himself through space regardless of gravity/wind resistance/inertia? Has the issue ever even been tackled in the comics or the movies and I've just never heard it or is this another glaring journalistic omission by the Daily Planet? Please, I must know, it's oddly disquieting for some reason.