Hello Again, Sherminator
I've just checked the mass of the moon on Wiki and as I thought it's 7,347,673,090,000,000,000,000,000,000,000 metric tonnes (I hope that I've typed the correct number of zeros!). All the nukes in the world fired at it at the same time would have no effect apart from leaving a relatively small smudge!, but if we just imagine it breaking up into millions of pieces for no apparent reason then, the effect would be much the same as I've mentioned earlier and I suppose that we'd have a ring of millions of small rocks. Very pretty from Earth, but with no one alive to see it.
The wonderful thing about our minds is that we can imagine the result of the totally impossible and that is the basis of most scientific research. It's great fun too so don't stop.
Einstein imagined riding away from a clock on the beam of light that was coming from it, and what the effect would be. The result was his theory of special relativity. I believe that having a knowledge of that has enabled us to add a correction factor to the atomic clocks in the satellites used for sat navs and has given us an understanding of the lifetimes of sub-atomic particles in motion just for starters. Three cheers for Einstein and his imagining the impossible!
Regards
Peter