There are some big questions that are really puzzling.
Why is there something rather than nothing?
Why do some physical factors appear to be 'fine-tuned' for life?
The relative size and distance of the moon is definitely not among the interesting puzzles!
However resorting to 'god' - whatever you mean by that - is NOT any kind of answer. It's a place-holder at best and a conversation stopper at worst.
The god of christian theism is impossible. Not only is there no evidence for Yahweh, there is a mountain of evidence against the proposition. So climb down off your high-horse and join the rest of us in humbly admitting we don't know everything.