You expect an entire theory(s) to be typed in the comments?
No, all I can do is point out the theories exist, and such you can go look at them.
The moon and the sun look like discs. That is all we can say. We assume they are spheres because we have been told they are spheres. We have been told that they are spheres and that the earth is a sphere, by NASA and our science books. I do not believe what NASA and our science books say because I have seen too much evidence to the contrary.
So, if we take your statement about your 5 senses crap (you really only mean one), then the only thing that you can say is that from our perspective they look like a circle. Everything else you have said is based on assumptions. And I do not agree with those assumptions, because I have seen too much evidence to the contrary.