All your question were already answered, just do your homework. Moon is round like a bulb therefore floor must be round too, right?

But tell me one thing. People (or machines) are (based on NASA) traveling to space (Moon or further) for about 50 years. If you go to space in distance where you can see all earth, would not be the first thing to take a camera and make a proper recording of you, space, Moon, Earth a shuttle so everyone can see? Rotating camera all around to capture all those amazing things in motion. An guess what? After 50 years we have nothing like that. Wondering why? Either someone doesn't want to share what's there or there is nothing to share and it's hard (impossible) to fabricate and therefore nothing "undeniable" is released.