It’s not rocket science to make a movie.

It [the rocket] will free man from his remaining chains, the chains of gravity which still tie him to this planet. It will open to him the gates of heaven.

The rocket worked perfectly except for landing on the wrong planet.

Okay baby, let’s take this rocket to Uranus. This hoor is perfect, and she can act as well.

If there’s a zeppelin, it’s alternate history. If there’s a rocketship, it’s science fiction. If there are swords and/or horses, it’s fantasy. A book with swords and horses in it can be turned into science...