Wie gehts denn nun zum Mond?

If you want to go to the moon, it's best to take the car. If you need to use the bathroom on the way, you just stop briefly. Upon arrival, you jump out with a parachute. And there waits the loyal space dog Rex, excited for a game of fetch. "That's all nonsense!" knows the know-it-all Ina and explains to her parents how it really works with the moon, gravity, and the space toilet. By the way, who actually claims that Ina is a "know-it-all"?.