The Moon is not God, heretic.
Actually, quite a few human cultures worship or have worshipped the Moon. Same deal with the Sun.
I can observe the moon every single day if I want to and that is not so with God. If I shut my eyes the probability the moon is still there is much higher then if I were to do the same thing with God...of whom I've never ever seen in my entire life.
Allow me to rephrase.
What you refer to as the Moon, as with all knowledge, is a construction. All knowledge is constructed. The Moon is a construction. The Sun is a construction. God is a construction. The self itself is a construction.
The very act of "observation" fundamentally modifies and shapes what can and cannot be observed in the first place, and this happens in ways that individual men and women cannot even begin to be consciously aware of (due to both biological and cultural constraints). This is the essential insight of philosophy over the past 100 years, that there is no such thing as "innocent" observing, no passive "map-making" of reality. The Myth of the Given has been laid open bare.
Hell, even the idea that knowledge is a construction is itself a construction....
This is also why modern philosophy of science (in the way of Thomas Kuhn's insights about paradigm shifts) does not embrace the naive realism that many individual scientists subscribe to. Ever since Sir Karl Popper, we've moved away from the idea that scientific progress occurs directly through empirical observation (due to the threat of methodological bias). We now realize that inductive reasoning based on such empirical observations is how knowledge progresses in science.
And I would argue that it is not faith at all to make an assumption based on repeatable observation. This is more along the lines of a pretty safe guess.
The problem with the 18th century worldview you are espousing is the naive assumption --- there is a reason philosophers call it 'naive realism', after all --- that your observations correspond with reality in a self-evident fashion. Your observations take place within a certain context (the combination of psychological, biological, and social constraints that limit what you can observe) and everything you "see" is filtered through that context.
As long as you work within the confines of this context, paradigm, or schema, then things are fine. However, once you move outside of this context, then the self-evident "truth" of your observations no longer holds. In particular, the truth of these statements becomes less obvious as you move further away from formal-operations and closer to network-based systems thinking. And this isn't even getting into altered states of consciousness!
This isn't to say that all knowledge is relative or arbitrary, merely that is inevitably contextual in nature. There are, of course, narrower and deeper contexts. The logical formulations of concrete-operations is a relatively "narrower" or more "shallow" context than the logical formulations of formal-operations (since the latter encompasses the former).
There is a real problem with trying to label both of these things as faith. It assumes that real parity exists between assumptions based on faith and those based on reason.
Reason??
Despite whatever psuedo-philosophy you've been fed, all "logic" and "reason" refer to are internally consistent arguments. The premises for which these arguments begin can be based on mythological faith assumptions as easily as they can be on empirical observations.
Reason is directly compatible with faith assumptions. It calls them premises, and has no real way of distinguishing between them.
Sorry folks, science trumps religion...always.
Sometimes, science and religion are the same thing.
The Moon that would be there if all humans were exitinct. The Moon that was there before humans ever existed. The very same Moon that crossbedded the Hinkley Sandstone Formation 1.5 billions years ago by pulling on the oceans with its gravity.
So, in other words, you don't know. Fair enough.