system
Given the following post, respond as if you're commenting on Reddit:
human
If a werewolf is on the moon, moon's orbit or around another planet, when does he become a wolf?

Are werewolves affected only by our full moon or any moon will suffice? If he is on the moon will he become a werewolf if he sees the "full earth"?
gpt
Years ago, a friend of mine emailed this very question to Mike Brown, the astronomer whose discovery of Eris led to the demotion of Pluto. He responded thusly:

> Really, of all of the possibilities you discuss, the Pluto-Charon
werewolf scenario presents the most interesting case. Charon goes around Pluto every 6.3 days, so the werewolves would appear quite frequently. But, in an odd twist, they would appear only on half of the planet. Pluto's rotation is also 6.3 days so the two always present the same side to each other (sort of like our Moon does with us, but better). So half of Pluto doesn't even know that a moon exists, while the other half always sees it at precisely the same position in the sky. Imagine the fabulous experiemental control that you have here! Do werewolves occur when the moon is full *and you can see it*? Or just if the moon is full. Are there differences that occur if the moon is overhead vs. right on the horizon? For the earth we will never know. But the opportunity now exists to test this knowledge.