So the bottom of the pool/pond isn't needed to see the shadow, clearly, Gotcha.
If Earth is a closed system, then were do meteors come from? We know they happen - the one we saw over Russia a few years ago was well documented on dozens of dashboard cameras and the more massive extinction level ones like the six mile wide one that caused the Chicxulub Crater some 65 million years ago have plenty of evidence. What about the annual Perseids meteor shower? Where do they come from?
Bonus question: Where does Halley's Comet go? At it's furthest, it's 35 AU away. Where does it go in the domed earth model during those 70-ish years it's away from Earth?
What do you make of comet craters and the gigabits of photos of our solar system along with video? If the moon isn't solid it certainly stops the sun during eclipses, how do you explain that nobody who has looked at the moon through a telescope has said these ramblings of "not a solid" moon. Indeed how do you explain the numerous sources of data converging on these simple facts: the solar system being one of many in galaxies et all.. from the mayans to the summerians, none said "the earth is a flat dome". Where's the proof of it's flatness when anyone who's been on a plane can attest to the horizon, indeed curving and anyone who has a fathom of curiosity will certainly claim to have been or seen the edge and there is no such.
On meteors: No we do not know they happen, you just assume that they happen because you believe what you're told to believe. There's several proofs of evidence missing that connects what you saw on a video to the theory that space rocks fall down from the sky. This 'meteor' video, as well as other documented ones all show the strikes coming in from 20 degrees to 35 degrees. They have the exact angle and exact look of a missle strike, and you nor anyone else could tell the difference between a known missle strike video and the russian dashboard videos you speak of.
I'm not going to waste more time if you are just going to ask silly questions that involve assumptions and beliefs. You must first wake up and realize you've been lied to, instead of asking stupid questions with assumptions that "nobody that has looked at the moon said it wasn't a solid moon" How can you actually believe that nobody has figured this out before? Millions of people already know the truth, stop believing in your false and evil religion!