Sheesh, it's always terraforming. Some people are so geocentric. I mean, hel-lo-o? Ever heard of Galileo? Got burnt at the stake* for pointing out that Earth is not at the centre.

Well if the Copernican principle of mediocrity has any merit, we can leap to the assumption that some other star - let's say Delta Pavonis - has an Earth-like world in orbit around it - let's say world 6.

So why not say "Delta Pavonis 6form the moon" instead? It rolls off the tongue so much better.

*Okay, so I'm confusing him with G. Bruno. Have you got nothing better to do than spot mistakes and then read footnotes which acknowledge the mistake? I bet you're still reading to see where this is going, aren't you? Thought so.