Dragons on the moon?

[Lord of Angmar]

Correct me if I'm wrong, but I interpreted the creation story in the Silmarillion as being at least partly a myth

I agree that is does seem mythical, and I think perhaps Professor Tolkien thought of it more as a creation myth, although he obviously did not mean for the Valar or Iluvatar or the Themes to be myths. I consider myself a spiritual person, with some Christian beliefs, but I do not believe in the Creationist theory that God created Earth in Seven Days, etc. I think the story of the creation of Sun and Moon is similar to that, a story that some may take seriousy and some may take as myth.

If it is but a myth told by the Elves, then I suppose that Roverandom could in some way be tied up with Ea and Middle Earth.