The eclipse-coincidence argument is just mind-boggling. Why would the presumed intelligent aliens care about making the Moon/spacecraft be just the right size for this? What conceivable reason would they have to do so? If they did have such a reason, why not make the Moon's orbital plane match the ecliptic, so we'd get those pretty eclipses every month instead of the current rare occasions?

Is this supposed to be some sort of whistle-blow?

"Okay, Qualar, we'll make our base look like a natural satellite to hide it in plain sight. But we'll give the Earthlings a hint, what?"

#-o