I’m going to start by saying that, hypothetically, the Earth is round. Now, I know that gravity exists because I and everything on Earth is affected by it. I don’t, however, know for certain how or why it works. My basic understanding of gravity is that objects of great mass and density, such as the round Earth, the Sun, and other heavenly bodies, have a gravitational pull toward their centers. I can’t prove this, however, as it is only based on what I’ve paid attention to in school and other areas of life.
If this is true, then the reason objects don’t fall off of the round Earth is explained, though I wouldn’t be able to say why objects such as the Earth have a gravitational pull.
Now I’ll say that hypothetically the Earth is flat. I still know that some sort of force, be it called gravity or not, exists for the same reason. From what I’ve read about FET so far, this is because the flat Earth is accelerating directly upward (relative to this face) at a rate of 9.8 m/s2. Fine, then, the reason we are attached to the Earth is given, though I wouldn’t be able to say why the Earth has been constantly accelerating directly upward for at least as long as people have been around.
I’m going back to the world being round. It rotates, according to “RET.” This is why we have day and night, yes? The sun doesn’t orbit the Earth, as it is much more massive than the Earth. That’s what I (and everyone) learned. I have experienced first-hand, with the use of a very simple orbit simulator, how this works given that gravity follows the “RET” model.
http://dan-ball.jp/en/javagame/planet/I want you to take a look at this now:
It was the best video I could find on which the relative motion of the stars is observable. At each axis the same stars are always visible and appear to rotate around the center of the sky. At the equator, different stars are visible at different times of the day. This phenomenon is easily explained by the rotation of the Earth on its axis. I hope you can see how without further explanation.
Now the Earth is flat again. Well, damned if we don’t observe the same relative motion of the moon and stars (including the sun, though I guess FET distinguishes between stars and the sun). FET I believe would say that the sun and moon “orbit,” or otherwise move around the disk that is Earth to produce the effect of relative motion that we see.
This all seems fine until the stars are observed as they are in the above link. Their motion doesn’t seem to fit the FET model, unless I’m mistaken and FET proposes that all of the stars move around the disk Earth as if they were part of some globular cluster surrounding it, all accelerating along with Earth in the exact same direction and speed.
I have only read several topics on these forums, so forgive me if this post is tedious.